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Tracerlab TGC-1 End-window Geiger-Muller Tube

1967

Parts of a Waltham watch

Indium arsenide laser model IAL-6

1960-1970

Set of three observatory watches with keyless lever movements

circa 1900
Metabulator by Sanborn Company, Waltham, Massachusetts, U.S.A., 1950-1970

Metabulator by Sanborn Company

Chemiluminescent NOX analyser by the Thermo Electron Corporation, Massachusetts, USA

Chemiluminescent NOX analyser by the Thermo Electron Corporation

Sanborn Viso 100 portable electrocardiograph machine in wooden case, pen-and-ink recording, by Sanborn, USA., 1935-1955

Sanborn Viso 100 portable electrocardiograph machine in wooden case

1935-1955
PTC-225 Tetrad PCR (polymerase chain reation) thermal cycler with four alpha units and power supply, made by MJ Research, Inc., Waltham, Massachusetts in 1995. Used to amplify DNA, this machine is of the sort supplied to The Sanger Centre in Cambridge, UK, for their work on sequencing the Human Genome.

PTC-225 Tetrad thermal cycler with four alpha unit

1995
Movement of lever watch by the American Watch Co. of Waltham, Mass., 1851-1957. No. 3367742.

Movement of lever watch by the American Watch Co. of Waltham

1851-1957
Watch No.14743616, in gold hunter case, by the American Waltham Watch Co., Waltham, Massachusetts, United States, 1851-1957

Watch in gold hunter case

1851-1957
Sanborn Viso-Cardiette electrocardiograph machine, model 52, in wooden case, pen-and-ink recording, by Sanborn, USA, 1935-1955

Sanborn Viso-Cardiette electrocardiograph machine

1935-1955