A treatise on a box of instruments and the slide-rule - for the use of gaugers, engineering, seamen, and students (IA treatiseonboxofi00kentiala)
https://commons.wikimedia.org/wiki/File:A_treatise_on_a_box_of_instruments_and_the_slide-rule_-_for_the_use_of_gaugers,_engineering,_seamen,_and_students_(IA_treatiseonboxofi00kentiala).pdf
to have some at same time, easy, and easily rethe and, general, membered rule of approximation; and from the varieties render method employed in