General Radio 1567 #20971 Sound Level Calibrator 114dB 1kHz UNIT ONLY, UNTESTED!

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

CEL Instruments CEL-284 Acoustic Calibrator 114 dB 1kHz + Electrical O

Extech 407744 Sound Level Calibrator 1kHz/94dB MPN 407744 with Case

Simpson 887-2 Sound Level Calibrator 94/114 dB

Simpson 889 Sound Level Calibrator W/Case Freq. 1KHZ Level -114dB

EXTECH 407745 Sound Level Calibrator 94db/114db TESTED