Yup, toolmakers buttons. I have two sets, and most online sources think they are quite useless nowadays.
Mine are 494c
https://archive.org/details/StarrettToolsCatalogNo25/page/n128/mode/1up
Thanks leg17 and RTM! I had to watch a video to figure out how they were used but I think I understand now.

Through the magic of Evaporust and my new 3M wheel, this has been brought back to life.
-Don
Those look great Jeep! Hope your liking the Radial Bristle ?
I use it every day. Thanks for the tip.
-Don
hmmm... 3M radial bristles... I think we may need to hijack the thread for a moment or two. Those look interesting. Is the kit the way to get start (gulp - price!) or are there only a few 'grits' you need. I noticed that the wire gauge looked really good with no obvious scratches.

Yeah.. the replacement 1/16" cost more than the balance of the set....^ $5.00 really, REALLY? You ****.

Starrett Mag. base & Delta Retirement lamp that I repurposed. The one on the right is a vintage Brown & Sharpe surface gage/mag base. Steel plates used as bases with mag. on.
Here's a fun one I have not seen on this thread yet, except in a wishlist from Lugz upthread a ways.
I don't know how I missed yours, MShaw, but I also missed RTM's until now! I'm not much of a machinist, but twice I've needed something to apply steady, even pressure to remove a part from within a hole and a tiny machinists' jack would've been the perfect tool.I posted these on this string in Nov. of last year.
5 | •WSHR,.160X.375X.010 |


