Description
SINGLETON, AUSTRALIA. 1943-01. SNAP SAMPLING APPARATUS USED IN TESTING DEGREE OF CONTAMINATION OF THE ATMOSPHERE BY GAS IN CHEMICAL WARFARE. IT CONSISTS OF A 3 3/4 LITRE EVACUATED BOTTLE, FITTED WITH RUBBER BUNG, PRESSURE TUBING AND SEALED CAPILLARY. THE MECHANISM FOR RELEASING THE VACUUM CONSISTS OF A MOUSE TRAP, THE SPRING OF WHICH IS RETAINED BY MEANS OF A SMALL LOOP OF 44 GAUGE NICHROME FUSE WIRE. SMALL TERMINALS. BRAISED ONTO THE METAL PORTIONS OF THE TRAP, ARE PROVIDED TO TAKE THE LEADS FROM THE DISTRIBUTION BOXES. THE TRAP IS RELEASED ELECTRICALLY.
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Colour: Black & white
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Copyright expired - public domain
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