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Gas holder used as a meter and enging testing device

Gas holder used as a meter and enging testing device

1923
Test set of three Bray jets

Test set of three Bray jets

Gas Meter Tester

Gas Meter Tester

1923
Gas holder meter tester top section; upper beam, with wheels, dial hand, rope with weights attached and steel rope. Made by Parkinson & WB Cowan Ltd in 1923, and used by Perkins Engine Co Ltd until 2010 as an engine flow-meter calibrator and called by them a 'bell prover'.

Gas Meter Tester

1923