Home › Blog › Buying Guide › Technical Evaluation Guide: How to Identify a Quality Used, Secondhand, Pre-Owned, Surplus MOORE G-18 JIG Coordinated Hole Grinder Machine made in USA 1) Overview of the MOORE G-18 Jig Grinder The MOORE G-18 is a precision jig grinding machine manufactured in the USA, widely regarded as the benchmark for ultra-fine hole and surface finishing accuracy....