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Standard CMM Reference Spheres

Standard CMM Reference Spheres

The calibration sphere is used to perform calibration of your probe system.

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Name Part # Price  
∅ 1" Grade 10 Sphere with ½” shank
1-1/2” long, and Calibration Certificate		 3867 $265.00 Buy Now Button
∅ 1" Grade 10 Sphere with ½” shank
1-1/2” long, Calibration Certificate and Base with 3/8-16 threaded stud for mounting. Height to sphere
center is 4-1/2”		 3867-A $365.00 Buy Now Button
∅ 1/2" Grade 10 Sphere with ¼” shank 1” long, and Calibration Certificate 3891 $145.00 Buy Now Button
∅ 1/2" Grade 10 Sphere with ¼” shank 1” long, Calibration Certificate and Base with M6 threaded stud for mounting. Height to sphere center is 2-1/4”. 3891-A $210.00 Buy Now Button

Standard sizes are:

Ø25.4 mm (1.000") with ⅜-16 thread mount for surface plate inserts.
Ø12.7 mm (0.500") with M6 thread mount for surface plate inserts.