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…
A white cardboard box, printed with black and red lettering, contains a number of long glass ampules (smoke tubes). The tubes are held vertically within…
A brown case contains a blue and silver instrument. On one end is a black pump handle. On the opposite end is a hole for…
A Pyrex bottle with a short, narrow neck and a glass stopper. The bottle has masking tape adhering to its outer surface.
A small cylinder with a clip at its side to attach it to a piece of clothing. At the top of the instrument is a…
A black leather case contains a black rectangular instrument. On the front face of the instrument is a white dial giving air velocity in feet…
A black box with a blue velvet lining contains a black instrument. The instrument has a large glass-fronted dial on its surface indicating rotations per…
A leather case with a shoulder strap contains an instrument made of metal rubber and glass. At one end of the instrument is a red…
A rectangular wooden case, lined in black fabric, contains a number of objects: – A circular barometer used to calibrate the instrument. – A Type…
A brown leather case contains a black metal optical instrument. At one end of the instrument is a viewing port and at the opposite end…