STARRETT 818 Automatic Center Punch

Description

The Starrett 818 automatic center punch with adjustable stroke is 5" long with a 5/8" (16 mm) diameter for creating a starter dimple without the need for a hammer. Internal parts and the punch point are made from hardened tool steel for wear resistance, and the handle is made from 818 aluminum alloy for lighter weight than all-steel punches. The punch has an adjustable stroke, which can be set by turning the knurled cap. It also has a built-in mechanism to center the dimple. The point can be removed for replacement or sharpening.
Center punches make small dimple marks in a workpiece to help guide a drill bit. Manual center punches have a metal shank with a point and are typically tapped with a ball-peen hammer to mark the material. Automatic center punches have an internal spring mechanism that enables them to mark the material without using a hammer, leaving one hand free for steadying the work.
From the Manufacturer
The Starrett 818.00 Automatic Center Punch with Adjustable Stroke automatically strikes a blow when downward pressure is applied. It has a lightweight, knurled aluminum handle for a positive grip and easy handling. The fore of the blow can be adjusted by turning the knurled cap.