Quartz-clock designed by the “PTR”, Germany’s Bureau of Standard,
in the 1920s and 1930s

This contribution is based upon my year 2000 paper on:

Some aspects of precision time measurements, controlled by means of piezo‑electric‑vibrators, as deployed in Germany prior to 1950

By

Arthur O. Bauer

(pdf)

Keywords:
quartz, quarz, Giebe, Scheibe, Adelsberger, Cady, Lapis electricus, Ceylon magnet, Aepinus, Pierre and Jacques Curie, tourmaline, Prof. Voigt, patents: US1450246; US1472583; US1782117; US1789496, Pierce, Marrison, Mason, Hansell, luminous quartz, Leuchtquarze and Neon-Helium gas; Giebe and Scheibe’s “wire cord mountings”, Radio-Frequenz, Loewe, BOS, NPL, NIST, NBS, TM, synchronous clock motor (see also CFQ subject on this website), BIPM, X-cut, zero-angle cut,

Consider also the subject luminous-quartz on the introduction page of this website.

PTR = Physikalisch Technischen Reichsanstalt

Consider also: References

Consider also: Allied post war investigations

Consider also: Quartz-clock type CFQ

Back to: subject details