Two circle contact goniometer
Böhm & Wiedemann, München [replica]
Replica of a two circle contact goniometer (lacquered
brass and blackened brass base) with graduated circles
and vernier read-out, a rod with contact plane and specimen
holder on a ball and socket joint. Vertical circle 15.5
cm.
Signed on the horizontal circle "Böhm & Wiedemann,
München", ca. 1990.
collection Roger Warin