Using a quadrant with a plumb bob to calculate the height of a tower by triangulation. From Sebastian Munster 'Rudimenta Mathematica', Basle 1551. Woodcut

---

Size: 6000px × 4516px
Location:
Photo credit: © Photo12/Ann Ronan Picture Library / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 16th, century, instrument, line, mathematical, mathematics, measurement, scheme, surveying, triangle