A rectangular metal framework, consisting mainly of welded angle iron and aluminum sheet, forms a sturdy housing for a metal instrument, a 1960s-era mass spectrometer.…
A small (11.5 cm x 11.5 cm) clear plastic airtight food storage container contains a green PCB with two small silicon strip sensors mounted on…
A series of plastic rods are mounted in holes pierced in an aluminum block. The tubes make a 90° bend and terminate in a thin…
A small (22.5 cm wide) plastic case with a clear lid contains a circuit board set on an aluminum mount. The circuit board has an…
A collection of three electronic components: 2019.ph.845.1-2: Two similar microphone array boards. These are green PCB boards with serial ports at both narrow ends. An…
A metal artifact, roughly 40 cm tall, consisting primarily of a central ovoid chamber, and flanges on either extremity. Each flange has twelve bolt holes.…
An electrical assembly consisting of a cylindrical plastic platform with two circuit boards mounted along its length. The boards are joined by two connectors. At…
An assembly consisting of several circuit boards, arranged in vertical layers, separated by spacers. Three aluminum posts extend from the base of the instrument. A…
An assembly consisting of several circuit boards separated by spacers. The assembly has a roughly cylindrical form suggesting that it is meant to be mounted…
A deep blue metal case is sealed by two metal band clamps (one of which is missing). There are two ports on the rear surface…