100mm (4") base is hardened, ground, and lapped for long-lasting precision.

4mm (5/32") rod diameter.

Large high-contrast LCD digital readout.

Ring-type knurled lock nut.

Combination ratchet and speeder.

Auto-Off after 30 minutes.

Measurement HOLD button.

Zero at any position.

PRESET button.

Min/Max limits.

RS232 data output port.