The Starrett 824A fixed range, Inside Micrometer has inch readings, a measuring range of 3-4" with .001" graduations. Features adjustable contacts on the thimble end, an adjustable sleeve, Insulated handle and Lock Nut. For those who prefer inside micrometers without interchangeable rods. The 824 and 824M Series can be ordered individually or in sets.
Starrett 824 & 824M Series Inside Micrometers