THREE:Standard gauging implements were introduced about the year 1840, by the celebrated Swiss engineer, John G. Bodmer, a [148]man who for many reasons deserves to be considered as the founder of machine tool manufacture. He not only employed gauges in his works to secure duplicate dimensions, but also invented and put in use many other reforms in manipulation; among these may be mentioned the decimal or metrical division of measures, a system of detail drawings classified by symbols, the mode of calculating wheels by diametric pitch, with many other things which characterise the best modern practice.
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THREE:We must now bring this long and complicated, but it is hoped not uninteresting, study to a close. We have accompanied philosophy to a point where it enters on a new field, and embraces themes sufficiently important to form the subject of a separate chapter. The contributions made by its first cultivators to our positive knowledge have already been summarised. It remains to mention that there was nothing of a truly transcendental character about their speculations. Whatever extension we may give to that terrible bugbear, the Unknowable, they did not trespass on its domain. Heracleitus and his compeers, while penetrating far beyond the horizon of their age and country, kept very nearly within the limits of a possible experience. They confused some conceptions which we have learned to distinguish, and separated others which we have learned to combine; but they were the lineal progenitors of our highest scientific thought; and they first broke ground on a path where we must continue to advance, if the cosmos which they won for us is not to be let lapse into chaos and darkness again.
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