Features :

1. Econmial check master (Steel Gage Blocks) This Check Master, designed for convenient and quick testing of general calipers.
2. General check master (White Ceramic Gage Blocks) This Check Master is desiged to check the fixed accuracy of digital-controlled machine tools, machining center positioning and three-dimensional measuring machines.
3. Steel-made check master, with steel gauge blocks, needs attention to avoid rust;while ceramic check master, with creamic gauge blocks, is not only free from rust, but also abrasion.

Specifications :

Measuring Range	Order No.	Type	Permissible Error
300mm	022-153	Ceramic	±1.5μm
500mm	022-155		±2.5μm
600mm	022-156		±2.5μm