The universal gear rolling tester from ogasawar of japan is ideal for complex accuracy measurement of relatively small module gears. Besides the utility of universal gear rolling tester in production line, it is also suitable in laboratories for precision measurement. The ogasawar universal gear rolling tester operates for the measurement of gears by double flank inspection and also for spur gears as well as for a combination of helical and spur gears. This universal gear rolling tester is designed so as to fix a single flank inspection device in which telemicro is built-in. The ogasawar universal gear rolling tester is also supplied with a displacement detector in which telemicro, a wireless electrostatic micrometer, is built-in and is capable of a digital indication converting from the analogue and the frequency output of the detector. The device is able to record the output reading by a pen writer. The tester can test gear od from 1 to 160 mm, gear axis length from 0 to 310 mm, and module to 2 mm.