Established in 1952

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Precise and Ultra-Precise Calibration Spheres
for Coordinate Measuring Machines
and Master Balls

Spheres With Blind Holes

The proper Steel pin, ( 0.125", 3.18 mm diameter ) is supplied with each of the UB* and PB* series spheres. For the UB-B39, a 0.125 inch (31.75 mm) diameter by 0.850 inch (21.59 mm ) long tungsten carbide pin is supplied. Couldn't connect to MySQL