Plane trigonometry, and its application to mensuration and land surveying. Accompanied with all the necessary logarithmic and trigonometric tables
A school textbook of plane trigonometry, mensuration and land surveying by George R. Perkins, published by D. Appleton in New York in 1852 for American students and surveyors. The 61 figures are line-drawn polygons, triangles and field plots with lettered vertices and dashed construction lines, offering simple geometric diagrams and lettering for schematic and technical-looking layouts.
