Technical Data:
Internal and external diameter comparison instrument
Measures internal/external diameter, variation and taper
Total range of movable point: 2mm
Effective range of movable point: +/-0.1mm
Groove probes and disc probes are included
Applicable holding stem: dia.28mm
Range of internal diameter: 20-100mm/0.8-3.9in
Range of external diameter: 15-80mm/0.6-3.1in
Accuracy: +/-0.001mm
Repeatability: 0.001mm

Dimensions:
Overall length=147mm
Overall width=145mm
Overall height=115mm
Stem hole=dia.28mm
Angled arm/reference diameter=dia.20mm
Inclination angle=40deg

Remark:
Digital/dial indicator is optional
Cross table code 6844-T40 is included
Optional cross tables: 6844-T80 and 6844-T100
Optional dia.28mm/dia.8mm bush code 6843-B8
Optional 0.001mm digital/dial indicators
Optional high precision digital indicators codes 2140-6 and 2140-6WL
Groove probes measure small internal diameter and internal groove diameter
Disc probes measure large internal diameter
Disc probes also measure external diameter