. Building and repairing railways ... : Forming one of the series of the volumes comprised in the Revised and enlarged edition of The science of railways, . Fig, 6. prismatic compass with clynometer attachment. Used to take angles of slopes. The Prismatic Compass is used lor taking the magnetic bearing of aline The Clynometer attachment is used to take the slope of the surfaceof the ground with a horizontal Fig. 7. LOCKS HAND LEVEL. 52 BUILDING AND BE PAIRING HAILWATS.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1906