Sitomètre Modèle (Mle) 1911
No: 10258 Armée Belge
This device is an artillery level. It is also called sitogoniomètre because it combines a sitometer and a compass. This device is used to aim pieces of artillery (setting of the elevation angle) at a target. It was invented in 1910 by Gilbert GARNIER, a French officer (1874-1964) while working at the weapons plant Ateliers de Puteaux (APX).
( source Compassmuseum.com)
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