Do It with Tools and Machines 



Finding the in- 

 clination of a 

 plane with a 

 simple compu- 

 t i n g square 



Peepholes are 

 attached to the 

 arms to measure 

 the exact heights 

 of trees, poles, 

 buildings, hills, 

 mountains and 

 landmarks 



A handful of sparkling diamonds 

 used by an automobile manufac- 

 turer in truing grinder wheels 



An apparatus 

 for electro-me- 

 chanical mas- 

 sage. It is used 

 to relieve neur- 

 asthenia and 

 constipation 



Manufactured screws are thrown in the hopper and 

 the machine counts and delivers them to the packer 



Jar for holding 

 water to supply 

 moisture at all 

 times to the 

 intake manifold 

 of the automo- 

 bi 1 e engine 



A trestle with toggle levers to hold 

 a board during the planing process 



A quick-return screwdriver is a valu- 

 able addition to the automobile tools 



