Communiqués par John Coleman Fergusson

Cover for John Coleman Fergusson · Fergusson's Percentage unit of angular measurement, with logarithms; also a description of his percentage theodolite and percentage compass, for the use of surveyors, navigating officers, civil and military engineers, universities and colleges (Paperback Book) (2020)
Paperback Book
Fergusson's Percentage unit of a...
John Coleman Fergusson