... .1-3.0 ISO9001:2008; tolerance: +/-0.0001 worm and wheel gears Specifications:1) Suitable for various automotive, electronic, telecommunications, mechanical ... equipments: roundness meter, projector meter, microscope, gear-test meter, surface measuring meter and so on4) Precision/tolerance:0.0001mm5)Surface processing ... output of over 1 million pieces per month. worm and wheel gears