Adrianov compass
Adrianov compass in details: 1) Compass case; 2) Scale; 3) Magnetic  pointer; 4) Sight point; 5) Counter point; 6) Pointer stopper

The Adrianov compass (Russian: Компас Адрианова) is a military compass designed by Russian Imperial Army topographist Vladimir Adrianov in 1907. Wrist-worn versions of the compass were then adopted and widely used by the Red and Soviet Army.[1] Some of the older production examples (differentiated by the brownish color of their glow-in-the-dark markings, like the one in the photo) are slightly radioactive because of Radium-226 used in their dials. Newer ones, with teal or white paint color, use the non-radioactive phosphorescent paint.

References

  1. ↑ Popov, A. M. (1978). Начальная военная подготовка (учебник) [Basic military training course (a handbook)] (in Russian). Moscow: DOSAAF. p. 219. OCLC 316895320Available at Pennsylvania State University Library{{cite book}}: CS1 maint: postscript (link)
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