South African Class GO 4-8-2+2-8-4 South African Class GO 4-8-2+2-8-4 The South African Railways Class GO 4-8-2+2-8-4 of 1954 was an articulated steam locomotive. In 1954, the South African Railways placed 25 Class GO light branch line tank-and-tender Garratt articulated steam locomotives with a Double Mountain type wheel arrangement in service. It was the last new steam locomotive type to be acquired by the Railways. The Class GO 4-8-2+2-8-4 tank-and-tender Garratt locomotive was designed to operate on lighter rails. The designs were prepared in 1952 under the supervision of L.C. Grubb, the Chief Mechanical Engineer (CME) of the SAR from 1949 to 1954, and an
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