Logarithmic slide rule on piece of graph paper.

---

Size: 5616px × 3744px
Photo credit: © david soulsby / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: analog, analogue, calculating, calculator, computer, graph, log, logarithm, logarithmic, math, mathematical, mathematics, maths, number, numbers, paper, rule, scale, scales, slide, wood, wooden