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(201 - 220 of 247)
Ion chamber used by Millikan
Apparatus for demonstrating Lissajous’ curves
Geiger counters, small
Directional compass
Pelikan drafting pen
Bausch & Lomb US Navy binoculars
Cloud chamber made by Willy Fowler--2 views
Telescope and scale
Microammeter, Volta Meylan d’Arsonval
Dosimeter, pocket
Winslow strength-computing slide rule
Rheostats (3)
Slide rule (B)
Galvanometer, Paschen
pH meter, Model M
Compass with sighting element, brass
Truck model for GALCIT 10 ft. wind tunnel
Ion chamber used by Millikan and Bowen
Slide rule
Compass with pocket string sundial