South African Class 14 4-8-2 South African Class 14 4-8-2 The South African Railways Class 14 4-8-2 of 1913 was a steam locomotive. Between 1913 and 1915, the South African Railways placed 45 Class 14 steam locomotives with a 4-8-2 Mountain type wheel arrangement in service in Natal. The Class 14 locomotive was a development of the Class 12 and was similar enough to it that many components were interchangeable. It was ordered from Robert Stephenson and Company in 1913 and was delivered in three batches between 1913 and 1915, numbered in the range from 1701 to 1745. At the time the Class 14 was
Minim (unit) size of a drop can vary considerably depending upon the viscosity and specific gravity of the liquid. (At the time, the phenomenon of surface tension was not well understood.) The minim, on the other hand, was measured with a graduated glass tube known as a "minimometer", later known as the minim-tube. The minim-tube was a type of graduated pipette, a device invented in 1791 by François-Antoine-Henri Descroizilles. Apothecaries' measures are fully defined in the United Kingdom's Weights and Measures Act of 1878, but the UK's 1963 Weights and Measures Act provided for the abolition of the minim, fluid scruple, and