Technical Data:
Meet international standard API5B
Measure pitch of external thread and internal thread with nominal diameter larger than 5 1/2in (139.7mm)
Range (L): 0.5-4in / 12.7-101.6mm
Digital indicator stroke: 0.2in / 5mm
Resolution: 0.0005in / 0.01mm
Accuracy: 0.02mm
Measurement principle: set zero on standard block, then measure workpiece

Optional:
Wireless transmitter: 7315-50M (receiver required)
Ball points: 6252 series
Standard pitch blocks: 6251 series