Comparator Brass Nut

This  to give gauge tool is used to help measure the actual “ogive touch” for regular bullets (Tangent ogive shape) and works well enough with deep seated bullets if measuring with bullets seated. A good alternative to the Sinclair inserts which do not suit short bullets deep seated. This “Nut No1” does cailbres 22, 6mm, 25, 26, 7mm and 30