Dial Bore Gauges 20-200mm x 0.01mm

For accurate measurement of bore diameter, taper and ovality.

The measurement is taken by 2 hardened steel anvils (1 fixed, 1 movable) which are automatically centred in the bore by a separate spring loaded guide.

The movable anvil is connected to a push rod inside the body of the instrument which operates a dial gauge at the opposite end.

A set of different length anvils and in some cases, extension tubes, enable a wide range of bore diameters to be measured.

The instrument must be calibrated to a known dimension before use; e.g. with an outside micrometer, setting ring etc.

Range: 20-50mm & 50-200mm
Depth: 105mm & 205mm
Resolution: 0.01mm
Accuracy: 18um

Set Includes:
Dial Gauge 0-3mm
Gauge Adaptor
20-50mm Measuring Head
50-200mm Measuring Head
6 Contact Points
2 Spacing Washers
1 Locknut
4 Extension Tubes
3 Spanners