Oh Dear,.....This Chequering subject is going on & on again & again! Monte Kennedy's Checkering & Carving of gunstocks has his explanation of "English Flat-Top Checkering" (Pictured is a c 1930s Holland & Holland. When I was working as a Vocational Training Instructor c1980-1986 for the Veterans Admin.With both WW2 & Viet-Nam Era Disabled Veterans, part of my Stockmaking & Chequering program was Making Chequering Tools.They were made the "Olde English" way, Cutting 2 lines aprox .020", the inside of the tool was 'squared out'(ie Flat-top of the line of wood that was left standing, which was the line I counted for the "Lines per Inch" If I can Have "Older Doc" post a couple of My 'Jobs',It might be of Interest. CC/DT