Telescoping Gages 229 Telescoping Gages with One Telescoping Arm 1/2-6"/13-150MM • Features a handle, one rigid contact arm and one spring-tensioned telescoping contact arm Telescoping Gages Starrett telescoping gages are 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.These tools 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slightly "rocked" in the hole being measured to ensure that the tool is on the proper diameter before it is locked and withdrawn.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. 229 Telescoping Gages Cat. No. EDP Range Handle Length in mm in mm 229A 50923 1/2 – 3/4 13-19 2-3/8 60 229B 50924 3/4 – 1-1/4 19-32 229C 50925 1-1/4 – 2-1/8 32-54 229D 50926 2-1/8 – 3-1/2 54-89 229E 50927 3-1/2 – 6 89-150 3-1/4 82 229 Telescoping Gage Sets Cat. No. EDP Description S229FZ 50928 Set of 3, 229A, B, C in case S229GZ 50929 Set of 5, 229A, B, C, D, E in case Handles can be individually ordered and/or ordered in larger sizes such as 8", 12" or longer, similar to 579 Telescoping Gage listing, upon request. Handles can be individually ordered and/or ordered in larger sizes such as 8", 12" or longer, similar to 579 Telescoping Gage listing, upon request. S229GZ S229 321 starrett.com H ole G ages and S lot G ages