A practical treatise on modern gas and oil engines (1902)
Grover, Frederick · Manchester, The Technical Publishing Co., Limited; [etc., etc.] · leaf 157
llow the water to flow from the buretteuntil the caustic potash in the pipette rises up the capillarytube to the position it at first occupied. Now close the stop llG W6 THE PRACTICAL ANALYSIS OF COAL GAS. cock at the top of the burette, and hold the level tube againstthe burette at such a height… … Flo. 93.—Method of using Hempels apparatus. care should be exercised. When water is used its surface inthe tube will be concave; with mercury the surface isconvex. In either case the line of sight when taking areading should be horizontal and tangential at the centreof the concave or convex…
Internal combustion engines
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