Triplett SLM400-KIT Decibel Sound Level Meter with Calibrator, 35 to 130dB

EXTECH 407745 Sound Level Calibrator 94db/114db TESTED

CIRRUS RESEARCH CR:262 DIGITAL SOUND LEVEL METER WITH CR:514 CALIBRATOR IN CASE

SC-941 - Sound Level Calibrator

Quest Technologies 2100 Sound Level Meter with QC-10 Calibrator Kit And Case

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

General Radio 1567 Sound Level Calibrator & 1983 Sound Level Measuring Set

QUEST CA-12B SOUND CALIBRATOR, RADIO GENERAL 1562-A, 1565-A, INTRINSICALLY MICRO