The ranges are achieved by the use of two measuring contact rods; one in the tool and one stored in the hollow handle. The gage is easily and accurately set to a micrometer.

Features

• Dial is graduated to show plus or minus
• Bezel may be rotated for zero setting
• Sled is hardened and ground for long, accurate life and has two long-line contacts in constant alignment with the cylinder wall. These reference points are spring loaded, making the gage self-centering and non-collapsible
• The locking screw (stem protruding above the dial) clamps the contact points in position for measurement with a micrometer
• The handle can be locked in any perpendicular or angular position and may also be transformed by a slight turn into a toggle joint with a wide sweep
• Extra handles may be ordered to make a long extension