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Nikon 6B Autocollimator, Brightfield (Sim: 6C, 6D) Model/Part No: 6B Item Code: nikon-6b Carrying case, extra bulbs, light source, and manual. Nikons line of autocollimators provides the exceptional accuracy and reliability required for demanding measurements such as checking parallelism of end surfaces, squareness, flatness of surface plates, straightness of movement and calibration of rotary tables and dividing heads. The 6B model is for bright-field use. Using a reflective surface, such things as the differences, variations and deviations of the microscopic edges of the object are read and a wide variety of measurements can be taken concerning deviations in its straightness, perpendicularity, parallelism, flatness and the like. The Autocollimator 6B makes high-precision measurements simultaneously on two axes with the brightfield technique. Telescope Magnification: 38x Objective: f=300mm; effective aperture: 70mm Measuring Range: 30 minutes of arc. Minimum Reading: 0.5 seconds of arc. Readout System: Adjustment in viewfield and reading on micrometer Measuring Accuracy: 0.5 second of arc within a range of 5 minutes of arc. 1 second of arc within a range of 30 minutes or arc Viewfield: 6B: bright-field, 6D: dark-field Light Source: 6V 15W special bulb. Power Supply: 110 VAC 50/60 Hz. Dimensions of Main Body: Outer diameter of lens barrel support: 68mm; Overall length: approx. 490mm. Item New/Used?: UsedItem Tested?: N/A Physical Condition: Very GoodWorking Condition: Very Good |