SHOP EQUIPMENT 



487 



especially liable to be of use to those who may care to install an artificial 

 respiration system in an old laboratory or to those who have but few 

 shop facilities of their own. It is advisable to obtain a catalogue of 

 gas fitter's or plumber's supplies, e.g., that of the Crane Company, 836 

 South Michigan Avenue, Chicago. 



33. Large vise ($9.50) the jaws should open parallel and there is little 

 danger of getting too large a vise. One with 4 l / 2 inch jaws opening 

 seven or eight inches is advisable. (A satisfactory vise is the No. 20, 

 made by the Prentiss Vise Company, New York.) 



34. Stillson wrenches, 6 inch and 10 inch. 



35. Pipe cutter. 



36. Mitre box and saw ($10.00 to $12.00). 



37. Heavy hammer (Adze-eye, ball pein, machinist's hammer, 1 pound, 

 $1.35). 



Fig. 376. Small electric heater. Useful for dissolving drugs, etc. 



38. Supply of iron rods (round, square, flat strips, etc.) and angle- and T- 

 iron. These iron rods, strips, T-iron, angle iron, etc., are not very 

 expensive and can often be used (especially the smaller sizes) instead 

 of brass. 



39. Hand emery wheel ($5.00). If a power emery wheel (which is greatly 

 to be preferred) is obtainable then the hand emery wheel can be omitted. 

 Burnishing and polishing can usually lie done by placing burnishing 

 wheels on the same head that holds the (power) emery wheel. 



40. Calipers, (2 sets, 3 inch and 5 inch inside calipers, 3 inch, are also 

 needed). 



41. Wire gauge. 



42. Screw thread gauges (2 are generally necessary to get a full range of 

 different thread sizes). 



43. Drill gauge. 



