Canvas knapsack spray used in the garden at Larundel Mental Hospital, Victoria, Australia, to spray insecticide or fertiliser, circa 1940

Physical Description

Knapsack spray has a tank with small outlet on the side. The tank's lid has a strip of iron across the top that sits under the rim and is fastened with a centre screw. The pump handle is connected to the tank and comes out to the side. There is an outlet from the tank which connects to the canvas bellows. Other side of tank has attached canvas shoulder straps.

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