Plate from 18th century encyclopedia showing illustrations of various measuring instruments and techniques. Dendrometry is the branch of botany that is concerned with the measurement of the various dimensions of trees, such as their diameter, size, shape, age, overall volume, thickness of the bark, etc., as well as the statistical properties of tree stands, including measures of central tendency and dispersion of these quantities, wood density, or yearly growth, for instance. In measurement, the Coggeshall slide rule, was a slide rule designed by Henry Coggeshall in 1677 to facilitate measuring the dimensions, superficies, and solidity of timber. Also shown are illustrations of; a plotting scale, protractor, and quadrant. .