slide rule in hand isolated on a white background

---

Size: 4272px × 2848px
Photo credit: © Laborant / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: algebra, architect, background, business, calculations, construction, contractor, education, engineer, engineering, hand, industry, instrument, instruments, isolated, mathematics, measurement, pen, pencil, professional, rule, scale, slide, structure, technical, technology, tool, vernier, vintage, white, work