The Practical Miner's Guide; comprising a set of trigonometrical tables, adapted to all the purposes of ... dialling ... Also a treatise on the art and practice of assaying silver, copper, lead, and tin, etc. [With plates
A handbook of trigonometrical tables, mine dialling and assaying, written by John Budge for working miners and surveyors and issued by Longmans in London in 1845. The plates are bare line diagrams: right triangles with lettered vertices, quadrant circles crossed by fans of dotted radii, and zigzag section lines marking shaft depths and angles of declivity, with figures set in open space.
