Solenoid, constructed at Grinnell College
Sine/Square Wave Generator
Model IG-82
model 360 (with te_170 and te_171)
Oscilloscope
Heathkit, model OL-1
Tektronix 502A with Cart (te_236)
Model 564 with Cart (te_238)
Tektronix 502A Dual-Beam Oscilloscope with Cart (te_240)