Handbook of projection for theatre managers and motion picture projectionists ([1922])

Page scan 000927 from Handbook of projection for theatre managers and motion picture projectionists

Record Details:

Title:
Handbook of projection for theatre managers and motion picture projectionists
Date:
[1922]
Publisher:
New York, Chalmers
Volume:
Handbook of projection for theatre managers and motion picture projectionists
Leaf #:
000927
Language:
English
Collection:
Books
Format:
Books
Contributor:
Gerstein - University of Toronto
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
14
Date Added:
July 19, 2022
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892 HANDBOOK OF PROJECTION FOR should insist upon the power company making a regular test of the meter. In making such a test, however, it is imperative that the voltage and the amperage remain absolutely constant during the entire period of the test. READING THE METER.— An electric meter is read precisely the same as is the gas meter. First carefully note the unit at which the dials are read. On all meters used by the Edison Company the figures above or below indicate the value of one complete revolution of the pointer, hence one division indicates 1/10 of the value of the complete revolution of the dial hand. Carefully note the direction of rotation of the dial hand, as indicated by the figures, the pointers moving, of course, from 0 to 1, 2, 3, 4, etc. Each dial will read in an opposite direction to its neighbor. Counting from right to left on a five-dial register the pointers of the first, third and fifth dials of a watt hour meter rotate in the direction of the hands of a watch, or to the right, while the hands of the second and fourth move in the opposite direction, or counter-clockwise. The same holds true of the four-dial register. The hands of the first and third dials move to the right and the second and fourth to the left. The dials must always be read from right to left, and the figures set down as read, remembering that until 1000.000 100.000 10.000 10.000.000 1.000 WATT HOURS No. 1. 10.000.000 WATT HOURS No. 2. 1000 KILOWATT HOURS No. 3. KILOWATT HOURS No. 4. Facsimiles of Meter Dials. Figure 366.