Set of Invention Sheets from the 1700s

Description

This is an extremely interesting set of various sheets with inventions from the 1700s. There are inventions such as: Gover's new improved Gun Carriage, The Treadmill for the improvement of prison discipline or the centrifugal engine for extracting water out of ships. These invention sheets are all from the late 1700s and are in impeccable condition for there age. Extremely fascinating inventions from an earlier time, and in total there are 21 sheets.
Measurements (closed): 8.5'' x 5.5''
Condition: These sheets are all in extremely good condition, especially in consideration of their age. Age toning &
fragile