| Author | Message | ||
     Glenn Middleton Rating: N/A |
David, I should also have added that I am not surprised with your head findings.There was more uniformity in period 1900/1939.During period of both World Wars the UK issued standards that reduced the amount of metal in screw/bolt heads for engineering use.Saving precious materials obviously.Do not know if this extended into the miniature screws of that period. From 50s onwards we seem to get more and more variation in the heads of standard screws used in photographic and electronic equipment.This even happened within a given company.The screw-heads on all later model FED/Zorki are larger than the heads on the 1 series.I learnt this the hardway,buying a box of series 3/4 FED and Zorki via eBay.I was hoping to salvage some screws,no bloody chance all heads to big!Still I did get a stack of mount shims and a number of take-up spools. |