Old Brown & Sharpe Mic

[MShaw]

I was rooting around and found the box that came with the mic. I bought it used in 1983 from a co worker who was selling his father in law's machinist tools at his retirement. Since the FIL would probably have had 40 years in the trade when he retired it would make the mic WW2 or shortly thereafter vintage.

 

[American Locomotive]

One of the most important pioneers in metrology and machining! Such a shame they were mismanaged into the ground in the 2nd half of 20th-century.

You can still see the remains of the old Brown & Sharpe factory in Providence, RI. They've all been converted to luxury lofts and office space of course, but still neat the very historically significant buildings still exist.

Great patina on that tool. That thing took a lot of measurements in its time, that's for sure.

 

[ganymede]

Nice model 11. That exact style frame appeared in 37. They switched to the chrome plated fat thimble jobs in 50/51.
You can narrow it down a bit if you feel comfortable backing the spindle out all the way.
If it has 1 nut at the end of the barrel then its mid 41 or earlier. If it has 2 nuts ( 1 for retention of threaded section of barrel and the other for tension) then its after mid 41.

 

[MShaw]

I removed the spindle (great chance to re oil it) and it has two nuts. That fits with the time frame I had estimated. Thanks for the input

 

[ganymede]

From 1937 catalog supplement View media item 107835.....

 

[Farleyfan]

I really liked the wooden cases they used to supply with the vintage machinist tools,
Now days your lucky if you get a cardboard box.