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Vacuum pump maintenance. Cleaning the gasket (old jet altimeter to measure pressure. )

89: Set up to grind a tool to disassemble the micrometer thimbol
88: What is the name of the outer driver?
87: Stoning showed what needed to get fixed.
86: Moon nut?
85: Restoring Mahr bench mic with Supramess Finished and testing with Russian set of .990 - 1 gauge blocks. Just waiting for the gold to fill in the etching.
84: Restoring Mahr bench mic with Supramess Hammared pewter Matches perfectly.
83: Restoring Mahr bench mic with Supramess Using some spindle oil for the indicator shaft.
82: Restoring Mahr bench mic with Supramess. The retractor needed a touch of lapping - really happy I got a set of expanding as part of a $20 lot of tools off ebay.
81: Restoring Mahr bench mic with Supramess After spending some quality time on my hands and knees - I started working with a tray - the pad helps keep things from bouncing. A perfect tray would have curled over edges so to trap anything moving horizontaly.
80: Restoring Mahr bench mic with Supramess Disassembly of the thimble - had to clean a bit of rust in the locking system. Needed cleaning.