Hood, Grant · Kansas City, Mo. : Kansas City Jeweler and Optician · leaf 135
he baseline A. B., from left to right near the bottom edge of the paper.Next bisect this line and draw a perpendicular line to it C. D.If the drawing board is perfectly square, this may be done withthe T square from lower side of the board, but as most boardsare not very accurate, the better way… … MODERN METHODS IN HOROLOGY. arbor and starts from the center of the escape wheel (onlyhalf of which will he drawn); the primitive diameter ofwhich is denoted by the semi-circle W. W. W. The diameterof this circle will be determined by the size of our paper, theopening of the pallets (the distance…
Clocks and watches
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