. Electric railway journal . ning with 1911, however, writtenexaminations on the timetable and book of rules have beensubstituted. When oral examinations were given one or two men wereexamined at a time, but with the change which went into ef-fect this year each man examined was placed in a room byhimself until he completed his answers to the questions. Inthe last oral examination 121 questions were asked; in the writ-ten examination there are 116 questions to be answered. Thewritten examinations are checked and any questions not an-swered in full or properly are taken up with the man individ-
. Electric railway journal . ning with 1911, however, writtenexaminations on the timetable and book of rules have beensubstituted. When oral examinations were given one or two men wereexamined at a time, but with the change which went into ef-fect this year each man examined was placed in a room byhimself until he completed his answers to the questions. Inthe last oral examination 121 questions were asked; in the writ-ten examination there are 116 questions to be answered. Thewritten examinations are checked and any questions not an-swered in full or properly are taken up with the man individ-ually. Mr. Espy states that the men are better pleased with thewritten examination, and that he has been surprised at theevidence of this fact. The new policy has had the good effectof leading the men to discuss the rules. ■ COMMUTATOR SLOTTING TOOLS The Westinghouse Electric & Manufacturing Company ismaking two types of commutator slotting tools, one type air-operated and the other motor-operated. Both types are shown. Electric Commutator Slotting Tool in the accompanying illustrations. Each of the slotting toolscomprises a circular saw with adjustable rests for centering thetool. Guides which bear on the commutator face are adjustableon the guide bar of the tool, making it applicable to a large
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