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[Features]· Hex wrench designed so that the wrench and bolt intersect at 0.0127 mm or less.· Scratching of blades and bolts are reduced by preventing the tip of the blade and the bolt from crossing over.· The wrench and bolt are secured as much as possible to achieve higher torque

Fresnel lens

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Long hexagonal bar wrench set made of special alloy steel that enhances high torque, durability, and wear resistance.Features· Uses a special alloy to enhance torque, durability, and abrasion resistance.· Wearing of the hexagon part is prevented using high-level heat treatment/hard chrome plating treatment, for high strength, toughness, and enhanced safety.· 9-piece set. L-shaped long type.· Various strength-enhancing alloy elements are blended; the addition of complete heat treatment raises alloy performance to the limit.· Holder included. Mass: 0.47 kg.Applications· Ideal for assembly of industrial machinery and electronic equipment, and for assembly and maintenance work of automobiles, motorcycles and bicycles.

Features· Both ends are bent toward the opposite side and opposite corner, and it is possible to use at swing angle 30°.· It is useful for working in a small place where the space for rotating a hex wrench cannot be secured adequately.· The hardness is HRC 53-57.· Made of general chrome vanadium steel.· Short type torsion wrench TTX-9S.Applications· Tightening of screws in narrow spaces.

A hexagonal bar wrench ideal for tightening and loosening hexagon socket head cap screws and hexagon socket locking screws in deep and narrow places.Features· T-type hexagonal wrench with a total length of 500 mm.· It exerts power in work in deep and narrow places.Applications· Ideal for assembly and maintenance work of industrial machinery.

[Features]· Convenient for attachment/removal of hex socket bolts mounted in deep places.· T-shaped handle is easy to grasp.· This product has black oxide surface processing.· The hardness is HRC 50-57.· It can be set as a stand and can be hung from a wall using a hook hole.[Applications]· For tightening and loosening hex socket bolts.

Who Invented the Lens Used at the Pigeon Point Lighthouse?Augustine Jean Fresnel (pronounced fray-nell) Fresnel (born May 10, 1788, died July 14, 1827), a French physicist, was commissioned by France in 1822 to develop a better lighting system for the French lighthouses. Rather than try to develop a brighter light source, Fresnel set about designing a better, more efficient method of using the light which 1820's technology could produce. 19th Century lighthouses used silvered-metal parabolic reflectors, placed behind a lamp, to direct the light seaward. This system was not very efficient, and worked poorly as an aid to navigation. Remember that light produced by a lamp, or any source, radiates out in all directions. Fresnel's task was to find the most efficient method to direct all, or nearly all, of the lamp's light rays out to sea. To improve upon the parabolic reflector, Fresnel looked to glass lenses for a method of directing more of the light from a lamp seaward. Molding a single lens to do the job was impractical. A lens suitable for a lighthouse would be far too large to be cast as a single lens. Instead Fresnel designed a system of smaller lens and prisms, arranged in a stair-step configuration. He used this system to bend, fold, and focus the light out to sea. The result was a lens that was able to use about 80 percent of the light available from the lamp! In the case of the lens used at Pigeon Point, about 70,000 candlepower was produced by the original lamp. This type of lens, called a Fresnel lens, was a technological breakthrough! The new lens was far more efficient in its use of the small amount of light produced by a ?page_id=22000">lard oil lamp. In addition, a Fresnel lens could be disassembled and shipped in sections and configured into virtually limitless numbers of light characteristics, that is, patterns of flashes of light divided by periods of darkness.

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The steel handle and shaft blade are welded, so torque can be applied firmly.[Features]· Handle and blade are welded and do not come apart.· The ergonomic design of the uniquely shaped handle is constructed with both ends lowered to fit the hand.· The weight of the iron handle creates a flywheel effect that allows screws to be turned with minimal force.

A hex wrench with excellent durability thanks to high dimensional accuracy and tough special alloy.Features· Boasts an extremely high finishing dimensional accuracy of 1/100 mm.· Sizes 1.5 mm or above are nickel chrome plated, providing rust resistance and long life.· Package included with CN series. DH series holder is a wide compact type.· The wrench has a 5-digit production number that can be used to trace back to the manufacturing process at the raw material stage.· Has extremely high hardness of HRC 59 and is made to be tough, providing excellent friction resistance and endurance and allowing high torque to be applied.· With a precision ball point, screws on angled surfaces can be rotated. (Allows oblique angles of up to 30°)Applications· The edge is lightly corner-cut, allowing the wrench to be easily inserted into screw holes.

Hexagon wrench which makes access to complicated places easy without holding the screw by hand.Features· Manufacturing error in all L-shaped wrenches is no more than the thickness of a hair regardless of the size.· A precision tool with excellent durability is created by adoption of this second to none dimension accuracy and tough special alloy.· Hex bar wrenches: Chrome plated specification and powder coating types are available.· Select with or without ball point for long and short products alike: we guarantee you'll find what you want.· Embedded spring ring binds screws and tool firmly for easy assembly in places where access is difficult.· The PB 212L1.5 and 2, due to size reasons, do not include a holding ring.Applications· Helps pick up the right tools. Keeping the work site tidy. Boasts unparalleled dimensional accuracy.

A hexagonal bar wrench ideal for work in deep places.Features· Because the total length is long, it is ideal for work in deep places.· T-shaped handle type for powerful tightening and fast rotating work.Applications· Convenient for assembly and maintenance of machinery, and maintenance of automobiles, motorcycles, and bicycles.· Ideal for tightening and loosening work for hex socket bolts / hex socket set screws in deep and narrow spaces.

Fresnel equation

A hex wrench set with an extremely high finishing dimensional accuracy of 1/100 mm.Features· Sizes 1.5 mm or above are nickel chrome plated, providing rust resistance and long life.· The CN series with holder includes packaging. DH series holder is a wide compact type.· Manufacturing error in all L-shaped wrenches is no more than the thickness of a hair regardless of the size.· A precision tool with excellent durability created from the adoption of unparalleled dimensional accuracy and tough special alloy.Applications· Helps pick up the right tools. For keeping the work site tidy.

Sizes are colored to be easily distinguishable and baked coating is luxurious and unlikely to peel off. 2.5-10 mm also come with a silk print size indication. Durability and wear resistance are further improved so that the Taper Head® can be used for final tightening. The torsional strength is 10% to 20% higher than the conventional ball point, and especially effective when used at an inclination (0 to 20°).

A hexagonal wrench featuring rust resistance with special powder coating.Features· PB rainbow wrenches use different colors to allow for easy differentiation between different usage dimensions.· Boasts an extremely high finishing dimensional accuracy of 1/100 mm. Boasts unparalleled dimensional accuracy.· Attractive color variations. Different colors are used for different sizes.Applications· With well-regarded rainbow color codes, the tool of your desired size can be detected instantly.· Helps pick up the right tools. For keeping the work site tidy.

Allen wrenches are nickel chrome plated, providing rust resistance and long life.Features· Manufacturing error in all L-shaped wrenches is no more than the thickness of a hair regardless of the size.· A precision tool with excellent durability is created by adoption of this second to none dimension accuracy and tough special alloy.· Hex bar wrenches: Chrome plated specification and powder coating types are available.· Select with or without ball point for long and short products alike: we guarantee you'll find what you want.Applications· Machinery, metal products, automotive industry, etc.· Sizes are from 0.71 up to 22 mm.

A long hex bar wrench machined with a ball point, enabling rapid turning in oblique work and temporary tightening.Applications· Made of special alloy steel that enhances high torque, durability, and wear resistance.· Prevents wearing of the hexagon part with high-level heat treatment/hard chrome plating treatment.· High strength and increased toughness (resilience against impact and destruction), improving reliable work and safety.· The setting of the ideal heat treatment conditions improves hardness at a maximum of 15%.· The ball point finish enables quick turning and temporary tightening from a diagonal position.· The ballpoint part is thin. Avoid applying too much force.Applications· Ideal for assembly and maintenance of industrial machinery and electronic equipment, and for assembly and maintenance of automobiles, motorcycles and bicycles.

To magnify is to make something bigger, whether in size or in significance.

A hex bar wrench set with inimitable measurement accuracy, that keeps the work site tidy.Features· Manufacturing error in all L-shaped wrenches is no more than the thickness of a hair regardless of the size.· A precision tool with excellent durability created from the adoption of unparalleled dimensional accuracy and tough special alloy.Applications· The L-shaped hex wrench (mm) is widely used in machinery, metal products, and automotive industries all over the world.· Sizes are from 0.71 up to 22 mm.· A tool suitable for the application can be selected from a wide range of products.

Hexagonal bar wrench ideal for tightening/loosening hexagonal socket bolts and screws in spaces where there are height restrictions.Features· Neck length has been minimized to be ideal for fastening/loosening work in places with limited height.· Made of special alloy steel that enhances high torque, durability, and wear resistance.· Prevents wearing of the hexagon part with high-level heat treatment/hard chrome plating treatment.· While it is significantly strong, the toughness is increased (resistant to breaking), improving reliable work and safety.· The ball point finish enables quick turning and temporary tightening from a diagonal position.· A 9-piece set of L-shaped long type with a short underhead length.Applications· Ideal for assembly and maintenance work of industrial machinery and electronic equipment, and for assembly and maintenance work of automobiles, motorcycles, etc.

Fresnel Blender

Hexagonal bar wrench set with unparalleled dimensional accuracy.Features· L type PB SWISS TOOLS rainbow wrenches feature a variety of attractive colors for a more pleasant user experience.· Different colors are used for different sizes, making it quick and easy to pick out the right tool for the job.· Holder included.· Package included with CN.· The handle portion is large, makes force application easy, and is less tiring to use than products from other manufacturers.Applications· Ideal for keeping the work site tidy, etc.

Accessory: HolderFeature: Set of frequently-used sizes.Mass: 431/setModel: L-shaped Hex WrenchSet Content: 9Set/Single Item: Set ProductTip Model: Ball PointTrusco Code: 351-5371Two-Sided Width Size: 10For complete product overview and details on Speed Handle Ball End L-Shape Hex Key Set - 9 Piece Set, 1.5mm to 10mm see the sections below:

Fresnel Shader

A hex bar wrench with inimitable measurement accuracy, that keeps the work site tidy.Features· Manufacturing error in all L-shaped wrenches is no more than the thickness of a hair regardless of the size.· A precision tool with excellent durability created from the adoption of unparalleled dimensional accuracy and tough special alloy.Applications· The L-shaped hex wrench (mm) is widely used in machinery, metal products, and automotive industries all over the world.· Sizes are from 0.71 up to 22 mm.· A tool suitable for the application can be selected from a wide range of products.

High-quality professional type for precision machining. Next generation plating finish Bright Guard TM processing.[Features]· The developed ball point can be continuously turned without damaging the wrench or bolt even at 25°

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Features· Since the underneck has a short design, the wrench can be easily inserted into and taken out of places where there is very little space above the bolt.· The double-ended wrench has opposite-side bending and opposite-angle bending on each end, making it ideal for places with narrow openings. (Available with the range of 30°)· The hardness is HRC 53-57.· Made from chrome vanadium steel.

Hexagonal bar wrench set made of special alloy steel that enhances high torque, durability, and wear resistance.Features· Various strength-enhancing alloy elements are blended, realizing high torque properties and toughness (tenacious and impact resistant).· Based on high-level heat treatment and hard chrome plating treatment, durability and wear resistance are increased, and accurate work and safety are improved.· The setting of the ideal heat treatment conditions improves hardness at a maximum of 15%.· The ball point finish enables quick turning and temporary tightening from a diagonal position.· Long type, 9-piece set.Applications· Ideal for assembly and maintenance work of industrial machinery, electronic equipment, automobiles, motorcycles and bicycles.

A hex bar wrench with inimitable measurement accuracy, that keeps the work site tidy.Features· Professional users can select tools to suit their purposes from the extensive product lineup.· Manufacturing error in all L-shaped wrenches is no more than the thickness of a hair regardless of the size.· A precision tool with excellent durability is created by adoption of this second to none dimension accuracy and tough special alloy.Applications· The L-shaped hex wrench (mm) is widely used in machinery, metal products, and automotive industries all over the world.· Sizes are from 0.71 up to 22 mm.

Fresnel diffraction

Fresnel Light

Features· Both ends are chamfered which makes it easy to insert into hex sockets.· Stable quality is provided by excellent heat treatment.· Cationic electrodeposition coating for sizes of 8 mm or above keeps hands clean.

Feature: Tightening can be done with about 4 times normal force. Final tightening can be done using the ball point.Model: Related productsSet/Single Item: Single ItemFor complete product overview and details on Super Ball L-Shape Hex Key with Power Handle see the sections below:

Hexagonal bar wrench made of special alloy steel that enhances high torque, durability, and wear resistance.Features· Uses a special alloy composed of various alloy elements to enhance durability and abrasion resistance.· High-level heat treatment and hard chrome plating treatment.· Improved alloy performance to the utmost limit, realizing high torque properties and toughness (tenacious and impact resistance).· Abrasion of hex parts is prevented, with its toughness increased along with reliable work and safety while the strength level is high.· The setting of the ideal heat treatment conditions improves hardness at a maximum of 15%.· Long Type.Applications· Convenient for assembly and maintenance of machinery, and maintenance of automobiles, motorcycles, and bicycles.

Apr 28, 2020 — The lenses used in lighthouses are shaped like a magnifying glass as a way to make the concentrated beam even more powerful.

Features· The holder is compact with 2 levels. The upper part opens for easy insertion and removal. By pulling out the connection pin, the upper and lower part can be used separately for convenient carrying.· Fit ring embedded in the Taper Head® catches cap bolt firmly, and you can insert the bolt into the desired screw hole with one hand only, for easy bolt exchange work in deep places and gaps. (2.5 mm or more)Applications· For tightening hex socket head bolts.

Features· Tightening is possible at 3 places on the tip.· 3 places on the tip are all the same size.· Length adjustment is easy and can be used in various places.· Useful for applying high torque.

• Model: L-shaped Hex Wrench• Tip Model: Ball Point• Two-sided Width Size (mm): 10• Set/Single Item: Set Product• Set Content (mm): 1.5、2、2.5、3、4、5、6、8、10

Fresnel pronunciation

A short hex bar wrench set that prevents abrasion of the hex portion and features both high strength and toughness.Features· Ideal for the tightening and loosening of hex socket bolts and hex socket set screws in places with height restrictions.· Holder included. Mass: 0.26 kg.· Uses a special alloy to enhance torque, durability, and abrasion resistance.· High-level heat treatment/hard chrome plating treatment.· The ball point finish enables quick turning and temporary tightening from a diagonal position.· 9-piece set. L-shaped standard type with short underhead.Applications· Ideal for assembly of industrial machinery and electronic equipment, and for assembly and maintenance work of automobiles, motorcycles and bicycles.

L-type wrench ideal for tightening and loosening hex socket bolts and hex socket set screws.Features· A hexagonal bar L-type wrench that boasts smooth operability and powerful tightening.Applications· Ideal for assembly and maintenance work of industrial machinery.

Features· Durability and wear resistance are further improved so that the Taper Head® can be used for final tightening.· The torsional strength is 10% to 20% higher than the conventional ball point, and especially effective when used at an inclination (0 to 20°).· Holders are designed for easy removal and storage of hex key and for convenient carrying and keeping.Applications· For tightening hex socket head bolts.

Fresnel effect

• Model: L-shaped Hex Wrench• Tip Model: Ball Point• Two-sided Width Size (mm): 10• Set/Single Item: Set Product• Set Content: 1.5、2、2.5、3、4、5、6、8、10mm

Features· Since the underneck has a short design, the wrench can be easily inserted into and taken out of places where there is very little space above the bolt.· The double-ended wrench has opposite-side bending and opposite-angle bending on each end, making it ideal for places with narrow openings. (Available with the range of 30°)Applications· Tightening and loosening work for hex socket bolts and hex socket set screws.

27/64. 10.7156. 59/64. 23.4156. 7/16. 11.1125. 15/16. 23.8125. 29/64. 11.5094. 61/64 ... Convert 2-51/64 inches into millimeters. From Table II. 2-25/32 inches = ...

The hex wrench edge is lightly corner-cut, allowing the wrench to be easily inserted into screw holes.Features· Holder included. Package included with CN.· With well-regarded rainbow color codes, the tool of your desired size can be detected instantly.· Features rust resistance with special powder coating.· Boasts an extremely high finishing dimensional accuracy of 1/100 mm.Applications· Helps pick up the right tools. For keeping the work site tidy.

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[Features]· The total length of the underneck part is as long as 500 mm, and it demonstrates its capability while tightening screws at deep positions.· The torsional strength is 10% to 20% higher than the conventional ball point, and especially effective when used at an inclination (0 to 20°).[Applications]· For tightening hex socket head bolts.

Pipe adapter developed exclusively for 2-stage holders can store 2 pipes comfortably without becoming unwieldy. Pipes are included, so it is ideal for retightening. Durability and wear resistance are further improved so that the Taper Head can be used for final tightening. The torsional strength is 10% to 20% higher than the conventional ball point, and especially effective when used at an inclination (0 to 20°).

Set long type easy-to-use ball point hex wrenches in 7 sizes.Features· Includes a dedicated holder that can hold 7 wrenches between 1.5 to 6 mm.· Full-quenching hardening treatment applied to strengthen the main body through a careful process.· A carefully selected special alloy steel used for the material, and highly corrosion-resistant and abrasion-resistant hard chrome plating adopted for the surface.· A ball-point type that can be used by tilting up to approx. 20° to turn a bolt positioned at an angle difficult to be aligned with a hex hole.· Long type that makes it easier to apply force when loosening a securely tightened bolt.Applications Can be used in a wide variety of work situations.

A hexagonal wrench featuring rust resistance with special powder coating.Features· Holder included.· Package included with CN.· Boasts unparalleled dimensional accuracy.· Rainbow L-shaped wrenches have attractive colors. Different colors are used for different sizes.Applications· The right tool can be confirmed at a glance and picked up in a trice.· For keeping the work site tidy.

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A hex bar wrench that prevents abrasion of the hex portion and features both high strength and toughness.Features· The ball point finish enables quick turning and temporary tightening from a diagonal position.· Uses a special alloy to enhance torque, durability, and abrasion resistance.· Prevents wearing of the hexagon part with high-level heat treatment/hard chrome plating treatment.· L-shaped standard type with short underhead.· Abrasion of hex parts is prevented, with its toughness (resistance to breaking) increased along with reliable work and safety while the strength level is high.Applications· Ideal for assembly and maintenance work of industrial machinery and electronic equipment, automobiles, motorcycles and bicycles.· Convenient for the tightening and loosening of hex socket bolts and hex socket set screws in places with height restrictions.

Features· Durability and wear resistance are further improved so that the Taper Head® can be used for final tightening. The torsional strength is 10% to 20% higher than the conventional ball point, and especially effective when used at an inclination (0 to 20°).· The door holder meets no resistance from the wrench or holder, so removal and replacement is easy. After use, the wrench will be returned to its original position just by closing the door.Applications· For tightening hex socket head bolts.