Assembling of Materials 177 



must be placed, n nearly ai possible, at the actual 

 poin I they arc to be used, and in the best 



position to be picked up by the workmen All 

 carrying or lifting is a waste unless it contributes 

 to some useful or necessary purpose. 



I .ling and hand fitting in as- 

 sembly are expensive, and it is one of the objects 



:iodcrn interchangeable manufacture to reduce 

 this to the lowest possible point. This is done 

 by the use of accurate fixtures and limit gauges 

 the latter being designed on the "go" and "not 

 go** principle, the limits being so set as to insure 

 the usability of any part which fits the gauge. 

 The inspection of the separate pieces should be 

 made before they reach the assembly, as this is 

 the poorest place in the whole factory to catch 

 defective work I i it is caught there, a lot of work 

 has been put on the piece and wasted, and it may 

 even have gone into the assembly and have to be 

 taken out. The detection of faults by early in- 

 spection involves only one piece; whereas, if the 

 fault is allowed to run on into assembly, it may 



>lvc delays in connection with every other 



piece in the assembly, although the others may be 



all right. An assembly foreman should be able 



confidence in all the material which comes 



to him, so that he can go ahead with his work 



iout constant dread of being held up by de- 

 fective material. 



Assembling on a Lint'. The usual practice is 

 to bring the work to the <;v^-m/>/\. If the work is 

 large and heavy this may be done on a cast-iron 



