Show NEW IDEA IN WATCH MAKING discovery it Is announced Is capable of revolutionizing the tha present industry not long ago there was announced a discovery described by the director of the international bureau of weighty and measures as being capable of revolutionizing lut ionizing the watch making industry A successful method of regulation remedying the variations in time of a watch due to the expansion and contraction tr of its parts caused by variations of temperature grature Is the result of the invention of C E guillaume this so called callad secondary error always has been one of the great obstacles in the attainment of perfection and precision in the industry the chief feature of the guillaume process Is a change in the alloy used in the campen compensating abing parts then mini mum expansion of steel was found to be increased by the addition of 12 per cent of chrome as well as a small quantity of tungsten manganese or ani carbon bon by mounting a spiral of this steel nickel chrome alwy in the watch according to ake french announcement the problem of compensation has been solved and the secondary error removed moved ic ie washington star |