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Rudolf Krause
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Length-Measuring Instruments Using Mechanical Means
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Abstract
7571. Krause, R.. March 29. Slid e - rules.- Consists of a base 1 and a slide 2, both graduated to 1000, and of a nonius 3 for reading both. A larger instrument has two sets of graduations on both members, 0 to 5000 on one edge and 5000 to 10,000 on the other.
GB190207571D1902-03-291902-03-29Improved Calculating Scale or Slide.
ExpiredGB190207571A
(en)
Improvements in Instruments for Determining the Compass Course of a Ship from the True Course, or for Determining the True Course from the Compass Course.