A black plastic box contains a red and black sound level meter.
The meter (Quest Electronics Permissible Sound Level Meter, Model 215) has red sides and a black top surface with a black and white dial and two black switches. On the right side are two shiny metallic knobs.
The case contains a sound calibrator (Quest Sound Calibrator Model CA-12) in the form of a red cylinder with a tapering silver top section.
The case contains several smaller items including a screwdriver with a clear green handle, a 9-volt battery, and two black plastic “caps” and a private letter pertaining to the instrument’s use.
Accession Number: 2016.phlt.1.114.1-8
Primary Materials: Metal, Plastic
The words “Not Intrinsically Safe” are written in pen on a piece of masking tape covering the top surface of the sound level meter.
A “calibration date” and “next service due” date appear on a label from Levitt-Safety Limited, which is on the back of the sound level meter. These dates are “July 25/ 02
and July 25/ 03” The same label appears on the sound calibrator.
The serial number embossed on a label on the back of the sound level meter is “M20200048”.
The serial number on the sound calibrator is U2020087.
The sound calibrator features a sticker that reads:
“ESSO CORPORATE ASSET
Case: Length = 31.5, Length = 16.5, Height = 10
This kit includes a meter for testing sound levels as well as associated calibration equipment.
Quest Electronics, Oconomowoc, Wisconsin
Late 20th c./ early 21st c. (before 2003)
Correspondence found in the instrument case suggest that this was used by workers at ExxonMobile, Canada around 2005.
Additional Information and References: