Imagine never having to guess which size screw thread, tap or thread drill you have or need. Now you don't have to! Our standard scale screw checkers are perfect for helping directly determine what screw thread size you need. These are a must for every knife and gun enthusiast. These are used for thread, tap and drill determination.
Imprinted with KnifeKits.com on one side in precision threaded steel, this model will stand up to the pressure of pro-level use. This package includes the base unit with complete instruction guide.
Unit of measure: Inch (Standard)
Note - Displayed units below are filmed from our econo plastic model to demonstrate how these are used to determine screw sizes. The model being sold under this stock number is our full metal pro-line unit.