A Time-Saver for the Repairman 



It locates the trouble for him and 

 tells him how to make repairs 



Above: Testing the electrical sys- 

 tem of the car. At right: The box 

 containing the complete equipment 



THE ingenious device shown in the ac- 

 companying illustration was developed 

 to enable the automobile repair or 

 garage man to locate the trouble on any kind 

 of a starting, lighting or ignition system on 

 any American-made 

 car. It is a time 

 saver for both repair 

 man and owner 



It enables the & 



former to cor- 

 rect the 

 trouble 

 with the 

 least possi- 

 ble delay 

 and permits 

 the latter to 

 get his car 

 back into 

 service 

 without 

 longperiods 

 of idleness. 



It is hu- 

 manly impossible for the average repair- 

 man to know the electrical systems of all 

 cars. Many an owner has found this out 

 to his sorrow by having to wait a day or 

 two for his car because his repairman did 

 not happen to know the particular elec- 

 trical system of his car. And it must be 

 remembered that the electrical equipment 

 of the modern motor car is the most com- 

 plex of any part of the automobile. 



The device consists of a special ammeter 

 and voltmeter, a switch and wires, a dozen 

 small books called master charts and 

 several hundred wiring diagrams which 

 come in a small box, as shown. The main 

 fact involved in the operation of the 

 instrument is that every make of car has 

 a definite lamp current and charging rate 

 when it is operating properly. 



After setting the instrument according 

 to a certain one of eleven key numbers 

 which show through small openings at the 

 top of the dial face, according to the make 

 of the car, it is wired up to the battery. 

 Two handles are moved to give the proper 

 key adjustment according to whether the 

 engine is running with the lights off or 

 idle with the lights on, and the center 

 handle is moved to bring the current needle 



to the zero mark on the dial. If all is 

 well, the letter "N" appears through a 

 hole in the dial at 

 the bottom; if not 

 some other letter 

 appears, according 

 to what the 

 trouble is. 

 The me- 

 chanic then 

 looks in the 

 chart book 

 for that let- 

 ter and 

 learns ex- 

 actly what 

 to test for 

 next and 

 how to do 

 it. In this 

 way he con- 

 tinues to 

 test each 

 unit of the 

 system until 

 he finally lo- 

 cates the trouble 

 and finds out 

 exactly how to re- 

 medy it. 



Will the Dinners of the First Trans- 

 Oceanic Flight Be Hot? 



WITH the trans-oceanic airplane flight 

 waiting only for the termination of 

 the war to prove its certainty, it is interest- 

 ing to consider some of the unusual prob- 

 lems that it will bring up. How, for in- 

 stance, will meals be made hot ? So far as 

 an airplane is concerned, there can be no 

 ordinary kitchen. No stove makers or 

 coal dealers need apply. One way in which 

 the passengers of a small airplane could get 

 a hot "bite" is to carry their food in a 

 vacuum or thermos bottle. The food could 

 be made piping hot before the flight and 

 it would keep hot for days if necessary. 

 It would not be a bad idea if large pockets 

 were built in the side of the airplanes. 

 These could be made on the vacuum bottle 

 principle. Into these, vessels containing 

 large quantities of already prepared and 

 piping hot food could be stored. 



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