Yester day I picked up a new set of mitutoyo inside micrometers in the case for 63.00 They go from 1 1/2 to 16 inches------need one more to measure down to some T parts below 1 1/2 inches. Any one have a quality extra to part with?
Once you go below 1-1/2" you're looking for telescoping gauges to use with an outside mic, and below about 1/2", small hole gauges to use with an outside mic.
I have snap gauges but not quality ones I intend to do Babbitt mains so say 1 to 1 1/2 is my preference. Some retiring machinist will have what I want ----if I care to wait! Thanks Walter.
For repetitive work like that a dial bore gauge would be nice, but I think finding one that will go that small will be difficult as most of those also start at about 1-1/2".
Checking through my stash of quality tools I have a mitutoyo dial caliper up to 8 inches and another to six inches a bit large for my intent but should work if I am careful until something better shows up.
Be sure and check the inside jaws on some sort of standard, even if you have to open up an outside mic and use the inside jaws to measure across that. It's easy to pick them up and calibrate measuring across the outside of some known standard, or simply zeroing them with the jaws closed, but quite often either due to jaw wear or slack in the rack, the inside jaws will give you a different reading. If you're doing close work and you toggle between the two without knowing how they behave inside vs. out it, can make for some frustrating mistakes.
Thanks Walter thought of that I have the test blocks for them and will check. Cool here hope your side of the states is comfortable our town is full of campers fishermen and sight seeing folks for the morning eclipse.
Paul, you need one of these. This is a quality English Moore and Wright set. It measures from 1" up to 2.25" with changes of spacers/anvils. It took me awhile to find an imperial one.
Allan from down under.
Wish I had one Allan-----the English measuring tools I have are high quality. Some thing will turn up.