ast- inspector to insert a thin strip of metal ened with a tapering key of this kind on the back of the key at a, Fig. 2, to see if there was a bearing there so there is no means of knowing whether as to hide bad fitting. If there was the work is well fitted or not. The no bearing then the work… … that case there was always other evi- the movement of the member keyed dence to show the fit. The same rule on. For this reason such keys are not applies in England to general practice, employed by machine-tool makers, or especially to machine tools and similar in the case of accurate work of any…
Engineering
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