File talk:N2O Medical Tanks.jpg

I miss a cm-scala on the picture. If I estimate the chrome plated valve top being 2,5...3 cm broad (side of square cross section), an estimation of the diameter of the steel cylinders at about 15 cm can be calculated.

The valve top comes without / to fit a hand wheel or flat or square box wrench. The gas outlet will be on the back side, as the front side shows a pit and - lower - a pin, encoding the gas quality and fitting to the inner side of a bracket-connector, pressed on by a simple screw. Although both cylinders are labeled "nitrous oxide" the pins are different in diameter and location. Somewhat strange ... --Helium4 (talk) 08:44, 13 December 2012 (UTC)