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(1 - 4 of 4)
pH meter, Model G
Title
pH meter, Model G
Format
photograph: negative
Description
Serial no. 3443. Mfg. by National Technical Laboratories.
Traveling wave tube
Title
Traveling wave tube
Format
photograph: negative
Description
This item is a long, thin glass tube with a larger cylindrical end. The thin part contains what looks like a coiled spring. The spring is attached to a copper base and some wires in the thicker end. Original wrapping labeled by Mendenhall: “Traveling wave tube/J.R. Pierce ’33/R. Kompner.”
Ion chamber
Title
Ion chamber
Format
photograph: negative
Description
Instruments like this used in India (1936 and 1940), Canada (1937), and the US (1936-38, 1940, 1946). This one, No. 14, used to correlate measurements made in the 1930s with those made in 1950s and 1960s with the pulsar-type chamber. Mfg. CIT Physics Shop.
pH meter, Model M
Title
pH meter, Model M
Format
photograph: negative
Description
Serial no. 5785. Mfg. by National Technical Laboratories.