Do It With Tools and Machines 



A hook made of 

 strong wire with a 

 snap having a tem- 

 pered steel tongue 

 at one end is very 

 handy for holding a 

 paint bucket or fruit 

 pail on a ladder rung 



The usual method of 

 cutting the larger sizes 

 of pipe on a lathe is 

 improved upon by the 

 use of the hand power 

 threader illustrated 

 above. It may be 

 taken to the job 



An ordinary electric ceiling fan is kept 

 running in this vestibule and when the 

 outer door is opened the air is driven 

 outward so swiftly that very few flies, 

 if any, will be able to effect an entrance 



A portable electric- 

 ally driven valve- 

 grinder which gives 

 the familiar oscilla- 

 ting motion. The 



By changing the 

 form of the interior 

 bore of this anchor 

 for a screw the max- 

 imum expansion 

 is given where the 

 greatest frictional 

 contact occurs, 

 which increases the 

 holding capacity 



A measuring gage 

 using a fluid against 

 a flexible diaphragm 

 to obtain readings 

 in ten thousandths 

 of an inch or closer 

 to determine the 

 thickness of stock 



speeds of the elec- 

 tric grinder are far 

 greater than those 

 attained by the 

 hand method 



75 



