Giebel, Karl, 1879-
Trigonometrische Berechnungen in der Uhrmacherei /
K. Giebel
- 2. Aufl.
- 70 pages : illustrations ; 21 cm
Clock and watch making.
Clocks and watches--Design and construction.
Mathematics--Formulae.
Mathematics Germany Trigonometry Giebel, K[arl] Timekeeper (general)