This gage is a standard for grinding and setting tools when cutting Acme threads Angles and edges of this gage are hardened, ground and carefully tested.
For determining the pitch of various threads Pitch marked on leaf Steel case Narrow design of leaves permits checking of internal threads and external threads With locking device.
For determining the pitch of various threads Pitch marked on leaf Steel case Narrow design of leaves permits checking of internal threads and external threads With locking device.