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'Durex' diaphragm, England, 1955-1970

Obstetrics, Gynaecology & Contraception

1955-1970

Set of 12 rubber measuring rings, for 'Clinocap' diaphragms, 1934

Obstetrics, Gynaecology & Contraception

1934

Carton for ‘Clinocap’ diaphragm, London, England, 1930-1960

Obstetrics, Gynaecology & Contraception

1930-1960

Mensinga diaphragm, London, England, 1950-1954

Obstetrics, Gynaecology & Contraception

1950-1954

Rubber diaphragm, Europe, 1920-1950

Obstetrics, Gynaecology & Contraception

1920-1950

Rubber diaphragm

Obstetrics, Gynaecology & Contraception

1920-1940

Rubber diaphragm, "Ramses" "Carna" type, in origin

Obstetrics, Gynaecology & Contraception

Gas meter diaphragm, in polyacrylonitrile butadien

Gas Industry
Commercial gas meter diaphragm in polyacrylonitrile-butadiene rubber on a flat-woven polyamide fabric, c.1976.

Commercial gas meter diaphragm in polyacrylonitril

Gas Industry

1976
Gas meter diaphragm made from the skin of an East Indian tick-free sheep and dressed with mineral oil, c.1976.

Gas meter diaphragm made from the skin of an East

Gas Industry

1976
Gas meter diaphragm, unoiled, made from the skin of an East Indian tick-free sheep, c.1976.

Gas meter diaphragm, unoiled, made from the skin o

Gas Industry

1976
29 miscellaneaous Waterhouse stops

29 miscellaneaous Waterhouse stops

Photographic Technology
Six stops for 35mm wide slot, in leather case.

Set of Waterhouse stops for Dallmeyer lens

Photographic Technology
Commercial formed gas meter diaphragm in Polacrylo-nitrile-butadiene rubber, (Metflex) on polyester-fabric, c.1976.

Commercial formed gas meter diaphragm in Polacrylo

Gas Industry

1976