/ Precision Measuring Tools / Precision Hand Tools / Hole Gages / Telescoping Gages / S229FZ * Not actual product image 50928 S229FZ Telescoping Gage 50928 Other similar products The Starrett Telescoping Gage is used for determining the true size of holes, slots, and recesses up to 6" (150mm). The ends of both contacts are hardened and ground to a radius to allow proper clearance on the smallest hole the gage will enter. This tool must be slightly rocked in the hole being measured to ensure that the tool is on the proper diameter before it is locked and withdrawn. The final hole size is obtained by measuring over the gage contacts with a micrometer. SET, Includes 3, Nos. 229A/B/C in Case. Features Specifications Contact Starrett Features Precision Ground Radius on each gage provides two-point contact for maximum accuracy Case Handles can be individually ordered and/or ordered in larger sizes such as 8", 12" or longer Features a handle, one rigid contact arm and one spring-tensioned telescoping contact arm Ends of both contacts are hardened and ground to a radius to allow proper clearance on the smallest hole the gage will enter Specifications Range (in): 1/2 – 2-1/8" Range (mm): 13-54mm Handle Length (in): 2-3/8" Handle Length (mm): 60mm