AGD Snap Gages provide a quick and easy attribute method of checking outside diameters, groove diameters, or width dimensions by having the go and no go elements set into the snap gage. Thread Check offers 3 assorted frame styles with sizes ranging up to 8 5/8. Larger frame sizes are quoted upon request. The anvil gaging contacts are adjustable and can be set to various sizes within a range. The anvil gaging surfaces are made of hardened ground and lapped tool steel. Marking discs are supplied on all snap gages. Carbide anvils are priced on request.