BASE PLATE FOR DUMMIES

According to historic texts, the inch was very first recognized in the 7th century as a method of assessing wound depth. Its first official definition dates from 1324 – 3 grains of barley, dry and round, placed end to end, lengthwiseHeritage/origin: The term "inch" was derived in the Latin device "uncia" which equated to "a person-twelfth" of a R