Page:Machinery's Handbook, (6th Edition, 1924, machineryshandbo00indu).pdf/126

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0.0111, 0.0136, 0.01535, 0.01683, and 0.0229. If the left-hand index represents 1000, the readings must be multiplied by 1000. When a value has been assigned to the index, the same ratio must be maintained throughout the remainder of the scale, a line on any scale always representing the same sequence of figures, but not always the same value. The scales C and D have a greater number of subdivisions between two consecutive numbers than have the scales A and B between the same numbers; therefore, it is customary to use the C and D scales for multiplications and divisions, as they can be read with greater ease and accuracy.