Weight is another factor, as adjustable ring gages have a significant increase in weight to accommodate the adjustment feature. Weight is the biggest factor in thread gage life. Excessive weight reduces gage life. Thread gages are rotated on product threads axially one thread at a time until full engagement is completed. This continuous rotation creates the wear.
Weight enters the picture as a function of friction.
The greater the weight, the greater the friction. Reductions in weight are accomplished through design of the thread gages. Go thread rings are most affected by friction because they are thicker by design and go gages are suppose to pass over the product threads unlike no-go gages. Some would argue the solid ring is not lapped to final size. If both meet manufacturing tolerances, they are suitable for verifying conformity.