Tool microscopes generally have a circular contour lens, referred to as the R lens. It is a concentric circle and an arc engraved line marked with a series of different radius values. China's JX7, J19jA tool microscope R lens engraved with a concentric circle of 0.1 ~ 1.5mm and a standard circular arc of 0.1 ~ 50mm or 0.1 ~ 100mm. The R lens is mainly used to quickly solve the problem of on-site measurement of workpieces during production. Use the R lens to measure the arc radius, it must be the workpiece nominal arc radius is equal to the R lens standard arc engraving calibration value
Albany Style High Speed Rolling Doors
KENVO DOOR aims to produce high premium quality industrial High Speed Doors for our clients. Our rapid doors are with similar design and function as Albany brand doors, but with a much lower price.
So, KENVO high speed door will have very low maintenance as Albany brand doors, and also save your one-time purchase cost at the beginning.
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SHANGHAI KENVO DOOR CO.,LTD , https://www.kenvodoor.com