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Cromwell Argus, Volume XLI, Issue 2208, 15 August 1910, Page 2

Tiny Tim is the name of the smallest engine in the world. It is made of gold and steel, and is so small that a common house-fly seems large in comparison. It weighs just foui grains complete, which is the weight of an ordinary match. It takes ovei 100 such engines to weigh one ounce, almost 2,000 to weigh a pound, and more than 3,000,000 to weigh a ton. The engine bed and stand are of gold. The shaft runs in hardened and ground steel bearings inserted in the gold bed. These bearings are counter-bored from the inside to form a self-oiling bearing. The fly-wheel has a steel centre and arms, with a gold rim, and the complete wheel weighs one grain. The cylinder is ol steel, with octagonal base, highly polished. The stroke is 1-32 of an inch ; bore 3-100 of an inch. Seventeen pieces are used in the construction of the engine. The speed of the engine is 6,000 revolutions per minute. When running 100 per second no motion is visible to the eye, but it makes a noise like the noise of a mosquito. The horsepower is 1-498,000 of one horse-power. Compressed air is used to run it ; and it may be of interest to note that the amount required to make it hum can easily be borne on the eyeball without winking. 1713.