Pantometer Or Rotating Surveying Square.

The +: complete with its tripods box and a compass.
Use: Surveying instrument for measuring angles and lengths on the ground.
Pantometer or rotating square, for surveyors and/or surveyors. Late 19th early 20th century. Made of burnished brass and bronze, mounted on a wooden tripod (oak), articulated with counterweight. Sighting system with slots in the upper and lower cylinder. Thumbwheel button allowing rotation of the upper cylinder. Graduated scale in silver-plated brass. Model completed with a compass housed in the upper part of the cylinder. Wooden box. Traces of oxidation. Original patina and varnish. Very good condition.
Another identical model available in "gold" brass.
Other models available: see last photo and Proantic ads.

Pantometer dimensions: height 12 cm, diameter 9 cm.