Central Tools Inc. Depth Micrometer 0-6" #6251 with Case.

This precision kit is rare and was made in Cranston, R.I. USA.

Set has been used, sold as-is.

https://www.autotoolworld.com/Central-Tools-6251-Micrometer-Depth-0-64Bs_p_131276.html?msclkid=621959aaaa4912d6cc8a3a11e6f7ca4c

https://www.toolsource.com/micrometers-c-1321_79_88/depth-micrometer-6in-p-76122.html?tsqtid=