David Brown wrote: ><PRE>It could just be an aberration in the making of it. A long time ago I >made a >dial for an 80th birthday present. It wasn't until after the presentation >and >delivery of developed photos that I realised that I had put the hours as >5,4,6,7,8.......... And so it remains!
It happens at the highest levels of precision. A grade 'A' Combination Set (Rule/Square/Protractor/CentreSquare) by L.S. Starrett (now in my possession) had its precision rule hand numerated after engine dividing of the four metric scales. While taking students on a works visit I watched similar been done in their Jedburgh factory. Three scales are OK but the fourth is numbered 10, 20, 30, 40, 60, 50, 70. Strange to tell it went undetected for years in a busy workshop. The puzzlement, frustration and 'scrap' produced as a result will never be known. The Starrett rep' was most anxious to buy it back! No way! Tony Moss -
