Posted by Paul in New Zealand [139.180.107.223] on Monday, March 23, 2020 at 20:43:10 :
In Reply to: Re: OT spring properties posted by DJ in WA [162.158.146.163] on Sunday, March 22, 2020 at 14:40:45 :
Sounds similar to the hit and miss success Springfield Armory had with the early 1903 actions , using the eye- o meter for judging the heat before quenching , prior to the introduction of pyrometers .