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George Sonnenthal
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Length-Measuring Instruments Using Mechanical Means
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Abstract
3 2 0 6. Sonnenthal, G., [Metallurgische Werke]. Feb. 9. Calliper gauges.-A calliper is provided with a centre-pin c for dividing distances between the ends of the legs a equally, or for use as a scribing point. This pin slides through the piece b which joins the legs a, and also through a second piece d connected to them by equal links e. A set-screw f in the second piece d keeps the pin c in position. The pin c may be replaced by a marking-pencil.
GB190403206D1904-02-091904-02-09Improvements in and connected with Callipers and the like.
ExpiredGB190403206A
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