Method of using quadrant fitted with a plumb line and marked with shadow scales to measure the depth of well. From Robert Fludd "Utriusque cosmi … historia", Oppenheim, 1617-1619. Engraving

---

Size: 2100px × 3543px
Photo credit: © Photo12/Ann Ronan Picture Library / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., /, 1617-1619., cosmi, depth, engraving, fitted, fludd, historia, instruments, line, marked, mathematical, measure, method, oppenheim, plumb, quadrant, robert, scales, shadow, surveying, utriusque, …