I bought a Starrett 10 - 11 inch micrometer With a friction spindle and spindle lock Grumpy. Used and in excellent condition. Going to use it to Measure Verify the True Deck Height of my Pontiac 455 block for the 1970 Trans Am. Determine the True Pin setting compression height needed with extra long Ti connecting rods. Order then my Diamond pistons. 3 week wait to get them. Custom made to my specs.