Starrett S579HZ Telescoping Gauge Set, 5/16 in to 6 in /8 mm to 150 mm, Double-Arm Plunger

The STARRETT S579HZ is a 6-piece telescoping gauge set used for measuring internal dimensions from 5/16 in. to 6 in. (8 mm to 150 mm). Each gage has two telescoping contacts with double-arm plungers, and the handles are rigidly attached to the contact plungers for self-centering action. The set is made of steel with a polished steel finish and includes a case for storage. Key features of the STARRETT S579HZ Telescoping Gauge Set: Measurement range: Covers 5/16 in. to 6 in. / 8 mm to 150 mm. 6-piece set: Includes individual gages for 5/16 in. to 1/2 in. (8 mm to 13 mm), 1/2 in. to 3/4 in. (13 mm to 19 mm), 3/4 in. to 1 1/4 in. (19 mm to 32 mm), 1 1/4 in. to 2 1/8 in. (32 mm to 54 mm), 2 1/8 in. to 3 1/2 in. (54 mm to 89 mm), and 3 1/2 in. to 6 in. (89 mm to 150 mm). Double-arm plunger design: Uses two telescoping contacts for internal measurements. Self-centering handles: Handles are rigidly attached to the plungers and center automatically during use. Spring tension and locking plungers: Constant spring tension provides uniform contact pressure, and both plungers can be locked at the selected setting. Ground contact ends: Hardened, ground ends with a radius provide two-point contact and clearance in small holes. Maximum measuring depth: 2-3/8 in. Replaceable handle: Yes. Includes case: Supplied with a storage case.