The Brown & Sharpe TESA 74.106026 swivel holder is used with Interapid 312 horizontal-lever dial test indicators. Two clamping points and a dovetail mount enable the operator to customize the indicator position. The stem has an 8 mm diameter and is 133 mm long, and is compatible with Interapid 312 horizontal lever-type metric dial test indicators with model numbers 74.111502 to 74.111507 (sold separately) and 74.106931 swivel holder (sold separately).

Test indicator gauges, also called gages, are precision instruments that measure short linear distances. They are commonly used for detecting deviations from tolerance limits, such as small variations in flatness or height of an inspected workpiece, and permit measurement in narrow grooves or small bores. A test indicator gauge consists of a ball-tipped contact point on a levered arm, also called a measuring insert, which pivots from a hinge point. The reading indicates the degree of angular displacement of the arm. Test indicator gauges are commonly used in manufacturing, machining, and mechanical engineering. Standard test indicators measure the displacement of the arm perpendicular to the axis of the indicator. Dial and electronic indicators are very similar to test indicators, except that the axis of measurement is parallel to the axis of the indicator. Test indicators can be analog, with a mechanical dial, or electronic, with a digital display. Some electronic models transfer the data electronically to a computer for recording and potential manipulation.

Brown & Sharpe manufactures precision measuring equipment and metrology hand tools. The company, founded in 1833, is headquartered in North Kingstown, RI.