STEEL PIPE FOR DUMMIES

According to historic texts, the inch was 1st identified while in the 7th century as a method of examining wound depth. Its 1st official definition dates from 1324 – three grains of barley, dry and round, put conclude to end, lengthwiseHeritage/origin: The phrase "inch" was derived with the Latin unit "uncia" which equated to "just one-twelfth" o