Show new meter successful the latest development in metering appliances Is a coal meter built on tho the principle of a water or gas meter this instrument was devised primarily to measure the coal consumption of 0 factory boiler rooms but it may find a wider application on a smaller scale it operates on the same principle as a water meter the stream of broken coal pouring down a chute and turning ait ad vane the meter can also be used for grain according to the inventor its use on coal was entirely successful |