طقم مقاييس تلسكوبية، 6 قطع 5/16 - 6 بوصة، ستاريت

I've been chasing true hole sizes for years and these finally give me readings that actually match my micrometers. The hardened contacts slide smoothly into slots without binding, and the lock mechanism holds firm enough to trust the measurement every time.

The hardened and ground radius on the contact points make these easy to slide into bores without catching on edges. I was able to get a consistent, repeatable reading on a 2-inch hole within a few tries.

I needed a set of telescoping gages for measuring some odd-sized slots on a repair job, and the hardened contacts on these slid into place without any binding. The lock mechanism feels solid and holds the measurement exactly where I set it, which gives me confidence in the reading.