PRO GUNSTOCK CHECKERING GAUGE by Mastercarver High-performance tools! This gauge is designed to help you create perfect master guidelines for gunstock checkering. It includes fool-proof layouts for diamonds either 3 or 3.5 times longer than wide. It also instantly determines the lines per inch (LPI) spacing of existing gunstock checkering. The Pro Gun-Stock Checkering Gauge detects line spacing of 16, 18, 22, 24, 26, 28, and 32-lines per inch (LPI) on existing checkering. Unlike, other similar gauges this gauge is precisely made from extra thick yet flexible transparent plastic that will never delaminate and eliminates pencil skipping. This is an essential tool for gunstock checkering. Length 9.25", Width 2.75". Includes instructions. Made in the U.S.A. by Mastercarver High-performance tools!TM. 887001 PRO GUN STOCK CHECKERING GAUGE