/ Precision Measuring Tools / Precision Hand Tools / Hole Gages / Telescoping Gages / 579E-8 * Not actual product image 67115 579E-8 Telescoping Gage 67115 Other similar products The Starrett 579 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. The 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be slightly rocked in the hole being measured to ensure that the tool is on the proper diameter before it is locked and withdrawn.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. Specifications Downloads Contact Starrett Specifications Range (in): 2-1/8 – 3-1/2" Range (mm): 54-89mm Handle Length (in): 8" Handle Length (mm): 200mm Downloads 2D Dimensional Drawing (PDF) .pdf 19.71 kb