K & E/ Cubic Precision Optical Micrometer .001" model 71-1111
The 71-1111 K&E Optical Micrometer w/ Vernier Scale offers the ability to measure horizontal or vertical displacement from a line of sight. Meant to mount on a 1.500 diameter barrel by means of its split clamp. Reads directly to .001" and to .0001" by means of the vernier. This same model was also made by Cubic Precision.
This micrometer is only available in inch graduations.
Full tilting level and micrometer kit found here