Browse Items (3473 total)

a cylindrical glass laboratory jar with rimmed top and base. Internally ground top for glass stopper.

Glass density bottle; etched onto bottle '1000 Grains, 60 F'; in custom-made black-painted tin; packed in cotton wool; adjustable brass weight with lead shot in lid

Brass cylindrical stand on 3 feet

central rod with six brass springs attached in a sphere like shape

Varnished wooden box with 8 knobs and 3 brass terminals, "P.S.B.T. Units" on side, No.2802. "Right at 15.5C". Central zero, plugs giving 1,10,100, 1000 ohms each side. Plug insulated handles showing white spots.

Pair of zamboni piles stored in sealed glass tubes with corks; completely sealed units

glass insulator with wooden handle with brass tapped ferrule; possibly for handling electrically charged objects

Example showing computer hardware technology of 1980s.

Brass with steel points.

Red painted wooden cylinder, part of whriling body demonstration using whirling stand (that we don't have). Small metal hook at top with attached string