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Hand-held gas sampler by J H Naylor Ltd of Wigan

Hand-held gas sampler by J H Naylor Ltd of Wigan

1950-1970

Air sampler hand pump. by Casella

Air sampler hand pump. by Casella

1970-1979

Water-cooled gas sampling system for vehicle emissions testing by G. Cussons Ltd. (to be drained of water before transit). On castors. Very incomplete, 1975 - 1980.

Water-cooled gas sampling system for vehicle emissions testing by G. Cussons Ltd

1975-1980

[Kitigawa] Japanese hand pump for gas sampling, 1960s, still in current use.

[Kitigawa] Japanese hand pump for gas sampling

1960-1969

Gas sampler by Charles Austin Pumps Ltd of 100 Royston Road, Byfleet, 1960s.

Gas sampler by Charles Austin Pumps Ltd of 100 Royston Road

1960-1969