SMALL INSTRUMENTS OF MEASUREMENT 31 finest tests for measurement are made the shops, the rule is accurate enough, but not so when fine dimensions or by microscopic vision. In other words, rule measurement and not that very precise, though comparatively of gauges is the final test for the finest… … difficult to work within 0.01 inch by degree of accuracy. The various Pratt & Whitney standard bars are the common rule, but 0.001 is not fine enough for the highest grades of ruled and read off by sight, just as with the English standard bars. Yet work. Hence we have here the part- ing of the ways…
Engineering
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