STEEL PIPE FOR DUMMIES

As outlined by historic texts, the inch was initially recognized within the 7th century as a way of examining wound depth. Its 1st Formal definition dates from 1324 – 3 grains of barley, dry and round, placed close to end, lengthwiseHistorical past/origin: The expression "inch" was derived from the Latin unit "uncia" which equated to "one particu