1x huot numbered drill gauge to test for bit sizing
These are actually really nice gauges, we use them in our shop and they make it quick to ID numbered drill bits with certainty. Bits fit very snug in the correct hole and will not fit in the next size down, obviously loose in the size too large. Used to be a chore to get out the micrometer to play "ID the drill bit in the loose bits bin" and now it's just mindlessly stuff in the hole and it fits or doesn't!