Page:Popular Science Monthly Volume 90.djvu/711

 Do It with Tools and Machines

���A rule tape for sidewalk use. The handle saves the opera- tor's back and a coil spring re- turns thetape to the tool

�����A steel storage drawer being subjected to a three thousand-pound weight in order to test its strength

SET SCRLW

TOOL

��RUBBER HOSE- CLAMP -

��A regulator for hose dis- charge. The farther the hose is pressed in the clamp the less water is discharged

��Below: A recoil tool holder which takes up vio- lent shocks when the tool strikes against an object

��Compound lever snips which give an evenly distributed cutting strain from the throat to the point of blade

�����OPENINGS IN COLLAR WHICH PERMIT ADJUSTMENT OF SPRING^ \ TENSION.

���A closed bushing with top that can be eas- ily removed with a screw dri\-er or pliers

��A machine for making and sharpening bits on drill steel. It is operated by means of compressed air. A single lever controls it

695

��A plain drill -press tur- ret-head for use where several op>erations are to be performed for interchangeable parts

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