South African Class 19B 4-8-2 initially plinthed at Middelburg in the Cape Province and later restored. During 2016 it re-entered service as "Bailey", restored at Voorbaai for the Ceres Rail Company. South African Class 19B 4-8-2 The South African Railways Class 19B 4-8-2 of 1930 was a steam locomotive. In 1930, the South African Railways placed fourteen Class 19B steam locomotives with a 4-8-2 Mountain type wheel arrangement in service. One of them was later reboilered and reclassified to Class 19BR. Fourteen Class 19B 4-8-2 Mountain type steam locomotives were built in Germany by Berliner Maschinenbau AG and were delivered in 1930. All but one
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