1 QUEST ELECTRONICS CA-32 PERMISSIBLE SOUND CALIBRATOR

1 QUEST ELECTRONICS CA-32 M-7b PERMISSIBLE SOUND CALIBRATOR Untested

CEL Instruments CEL-282, CEL- 231 Acoustic Calibrator Class 2-114 dB 1 kHz Sound

General Radio Company Type 1567 Sound Level Calibrator (114dB, 1kHz)

General Radio Co. 1562-A Permissible Sound Level Calibrator (114dB, 125-2000Hz)

1 Ohm 1 Ω Resistance Standard Resistor Calibrator Accuracy 0.002%

NOT WORKING 1000 Ohm 1 kOhm Ω 0.1Ω Resistance Standard Resistor Calibrator

1000 Ohm 1 kOhm Ω Resistance Standard Resistor Calibrator Accuracy 0.002%