Sigma Instrument Co: Difference between revisions
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1947 Listed Exhibitor - British Industries Fair. Manufacturers of Fine Measuring Instruments including Mechanical, Electrical, Optical and Pneumatic Comparators; Automatic Inspection Equipment. Gas Testing Equipment including Recording and Indicating Calorimeters, Specific Gravity and Pressure Recorders, etc. Automatic Control Equipment. (Olympia, Ground Floor, Stand No. A.1074) <ref>[[1947 British Industries Fair]] p250</ref> | 1947 Listed Exhibitor - British Industries Fair. Manufacturers of Fine Measuring Instruments including Mechanical, Electrical, Optical and Pneumatic Comparators; Automatic Inspection Equipment. Gas Testing Equipment including Recording and Indicating Calorimeters, Specific Gravity and Pressure Recorders, etc. Automatic Control Equipment. (Olympia, Ground Floor, Stand No. A.1074) <ref>[[1947 British Industries Fair]] p250</ref> | ||
1949 Manual or automatic controls for gas production<ref>[https://historicengland.org.uk/research/results/reports/8019/TheManufacturedGasIndustry_Volume4] Historic England</ref> | |||
== See Also == | == See Also == | ||
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[[Category: Town - Letchworth]] | [[Category: Town - Letchworth]] | ||
[[Category: Scientific Instruments]] | [[Category: Scientific Instruments]] | ||
[[Category: Controls and Automation]] | |||
Latest revision as of 11:18, 20 June 2024
of Spring Road, Letchworth, Herts. Telephone: Letchworth 446. Telegraphic Address: "Sigma, Letchworth". (1937)
of Letchworth, Herts. Telephone: Letchworth 1045. Cables: "Sigma, Letchworth". (1947)
1937 Listed Exhibitor - British Industries Fair. Gas Calorimeters. Gas and Air Flow Meters. Steam Flow Meters. Pressure Recorders. Automatic Gas Mixing. Relay Operated Exhauster Regulators and Retort House Governors. CO2 Recorders. Distant Recorders and Distant Indicators. (Stand Nos. Ca. 813 and Ca.712) [1]
1947 Listed Exhibitor - British Industries Fair. Manufacturers of Fine Measuring Instruments including Mechanical, Electrical, Optical and Pneumatic Comparators; Automatic Inspection Equipment. Gas Testing Equipment including Recording and Indicating Calorimeters, Specific Gravity and Pressure Recorders, etc. Automatic Control Equipment. (Olympia, Ground Floor, Stand No. A.1074) [2]
1949 Manual or automatic controls for gas production[3]
See Also
Sources of Information
- ↑ 1937 British Industries Fair p413
- ↑ 1947 British Industries Fair p250
- ↑ [1] Historic England