Historic Engineering Drawings

A collection of detailed technical drawings featuring cranes, testing laboratory designs, and mechanical systems. The images exhibit intricate lines, technical annotations, and historical styles.

Télescope parallactique de Merz et Mahler: détails relatifs au mouvement de l'axe horaire. Illustrations, Prints. 1845. General Research Division. Astronomical observatories, Refracting telescopes, Optical instruments , Drawings
Télescope parallactique de Merz et Mahler: détails relatifs au mouvement de l'axe horaire. Illustrations, Prints. 1845. General Research Division. Astronomical observatories, Refracting telescopes, Optical instruments , Drawings