By Jacob Leupold's Theatrum Machinarum.  Volumes 1-12; 1724-1803 collection in full set. 

This collection of antiquarian books held in private ownership for over 75 years, a first edition of the most complete illustrated survey of engineering by master German scholar Jacob Leupold.   This collection the most comprehensive work on technology of its time.

Size: 10 x 15, each book of 12

Condition: With loss and wear to covers, the leather exteriors very fragile and subject to erosion, the bindings delicate, bent corners, the paper with creasing, staining, toning, fold ware, with ex-library collection labels dated 1884 interior covers