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Parameters differ in how they approach looking at peaks and valleys. The most popular parameter is “Ra”. Ra is commonly defined as the arithmetic average roughness. While the Ra parameter is easy and efficient, there are other parameters that can be more specific and useful depending on the application requirements. It is the parameters that enable us to define surface roughness.
Infinity corrected objectives image well, no matter the magnification. They are ideal for applications requiring high precision and the modularity of adding ...
The single gooseneck is designed for applications that require a single, near horizontal, incident angle or a downward projected source of high intensity cold light. The single arm gooseneck is self-supporting and starts from the light source with a transition incline of 45 degrees.
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For more than 40 years H. James Henning held key technical positions in the forging industry, including as director of technology for the Forging Industry Association, and as president of Henning Education Services, a Columbus, OH, firm specializing in customized education and training in forging technologies.
In all, Jim spent 44 years as a technician, engineer, and supervisor in the forging industry prior to his retirement, including nine years as technical director of the Forging Industry Assn.
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Upon his retirement from FIA in 1996, Jim formed Henning Educational Services Inc. There, he filled a problem-solving role for forgers and other manufacturers seeking solutions to process and organizational issues. He shared his expertise on hot, cold, and warm forging, on tool design principles, process and equipment selection, and productivity and quality improvements.
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Concentric illumination developed for line sensors. Besides line sensors, it is best suited for detection of scratches, dents and marks on highly reflective ...
VIAVI light sources offer versatility in measuring fiber optic light continuity, loss and quality in field, lab, and manufacturing environments.
The self-supporting bifuracted light guide with starts from the light source with a transition incline of 45 degrees, from which the gooseneck branches diverge at an angle designed to accommodate any steromicroscope without interference to focusing or specimen manipulation.
Guidelines and recommendations offered in this column are based on information believed to be reliable and are supplied in good faith but without guarantee. Operational conditions that exist in individual plants and facilities vary widely. Users of this information should adapt it, and always exercise independent discretion in establishing plant or facility operating practice.
Skid-type surface roughness testers are common shop-floor instruments. A diamond stylus is traversed across the specimen and a piezoelectric pickup records all vertical movement. Peaks and valleys are recorded and converted into a known value of a given parameter.
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Today, for the purpose of checking Ra values, the use of portable, handheld, surface roughness testers are not only economical, but are digital and easy to use. These surface roughness testers are a necessity for any shop floor that receives work with Ra requirements. Then, such values are reported either as Ra values or RMS values. RMS is defined as the root mean square of the Ra values — a calculated value of the average of the average values.
Each seperate branch has a 5 mm bundle diameter and the 23" dual arm gooseneck inlcudes 28 mm focusing lenses. This system provides the most obedient light output placement for critical illumination.
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The ring light illumination system provides high intensity illumination at the highest magnification and long working distances without light adjustment when refocusing or when zoom features are used. The optic output is an annular ring configured to supply 360° of brilliant, oblique, and shadowless cross-illumination directed toward the optical axis at working distances from 4-23 cm. Fits objective lenses with 50-60 mm diameter.
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A: RMS (root mean square) is a comparative number as related to surface finishes measured with a profilometer. A fine finish is in the range of 20-40 RMS, a machined finish often is in the range of 80-120RMS, and gritblasted surfaces will be in the range of 400-500 RMS. I compare it to measuring the up and down movement of a diamond stylus as it would slide across the grooves of an old 45 rpm record.
Mar 22, 2021 — Silicon photodiode makes an excellent choice for visible light applications. It's less expensive and produces less noise than Germanium.
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Fresnel Lens Orders, Sizes, Weights, ... ; First-Order, 920 mm. 36.2 inches, 101.97 inches, 12787 ; Second-Order, 700 mm. 27.6 inches, 81.46 inches, 3527 ; Third- ...
Mar 24, 2022 — The function of objective lenses is to magnify objects enough for you to see them in great detail. Parts of a Microscope. Every microscope has ...
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The model MI-LED fiber optic illuminator offers long life LED illumination for microscopy and numerous other cold light applications.The MI-LED is available without attachments or in a complete system that includes a single light guide, a dual gooseneck lightguide with focusing lenses, or a ring light.
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Mitutoyo Infinity Corrected Long Working Distance Objectives are world-renowned for setting the standard of excellence for long working distance microscope ...
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Jul 3, 2024 — A lens's focal length is the distance in millimetres between its optical centre when it is focused on infinity and the sensor or film inside the ...