On 27/02/2019 20:24, newshound wrote:
On 27/02/2019 09:06, wrote:
On Wednesday, 27 February 2019 01:48:26 UTC, Commander KinseyÂ* wrote:
On Tue, 26 Feb 2019 11:49:54 -0000, tabbypurr wrote:

I've got lots of stuff with imperial hardware, mostly AF & Whitworth.

I'm 43 and have never ever seen anything requiring imperial ****.
Just how antique is your stuff?

Â*From modern to 1920s mostly.


NT

It was of course the good Joseph Whitworth who *started* standardisation
in 1841, a little ahead of Samuel Colt.

Only because Maudslay invented the screwcutting lathe and enabled
standardisation and interchageablity. He also used his newly accurate
threads to make a micrometer accurate to 1/10,000th of an inch for checking.

SteveW