Rectangular black box mounted vertically on a black metal column; copper tubes on either side with nozzles and stopcocks that feed into the flat top;…
Three horseshoe magnets with mirror supported on top of box between poles; suspended needle/mirror unit visible through flat glass plate on front of box; tripod…
Wooden case with removable back panel; circular glass face protector at front; white face with measurement scale in degrees marked “70-0-70”; double-ended needle behind a…
Box: faded leather with silver hinge closure; marked on lid “CAPILLAR-ROTATOR” at center and “C. ZEISS JENA” in lower proper left corner. Box in poor…
Brass cylindrical case is mounted on a wooden base and capped by a brown insulator and brass disc. The base also has 4 brass plates…
A wooden box with a rotating semi-translucent piece on one end (shaped like an elbow joint) for light to enter. Around the mirrored piece is…
The ammeter is set in a square, wooden, varnished stand, with a simple flat base and a vertical wood panel with the ammeter’s case set…
The ammeter is set in a square, wooden, varnished stand, with a simple flat base and a vertical wood panel with the ammeter’s case set…
A 10″ slide rule made of plastic with grooved frame and flat plastic cursor with multiple hairlines and metal edges. The white plastic stops on…
A cylindrical cardboard thermometer case, with a cylindrical lid that slides on.