An Essay on the Use of the Spirit Level: As Applied to Engineering and Other Purposes |
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An Essay on the Use of the Spirit Level: As Applied to Engineering and Other ... Thomas Oswald Blackett No preview available - 2015 |
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adjust apparent level Ash tree base line Blaydon centre chains circle CIRCUMFERENTOR column of air column of front column of rear CRAWCROOK MILL ROAD curvature decimal deduct Depres depression diameter difference of level Dist duated earth entered equal distance feet 6 inches field field-book FORE OBSERVATION Front Eleva front heights front staff glass tube graduated rod ground gum arabic high water inches intermediate heights level points LEVELS FROM SCOTSWOOD line of collimation line of levels low water main line method miles Newcastle observed height Occupation Road opposite parallel plates Parker's Quay point of contact quotient radius Rear Front rear heights rear staff right angles River Tyne SCOTSWOOD TO CRAWCROOK shew shewn side sion sliding vane South Shields Spirit Level spirit tube Spring Tide stake station staves Stella subtract Suppose surface taken tangent line theodolite Thornton Street tical tion total rise true level