Rare mechanical slide-rule
Rare mechanical slide-rule with old book and schemes
Size: 3648px × 5016px
Photo credit: © Andrey Maslakov / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: analyzing, antique, book, brown, calculating, design, drawing, education, engineering, equipment, instrument, knowledge, logarithm, mathematic, mathematical, measuriment, mechanical, mechanics, number, paper, physics, retro, rule, scheme, science, sign, skill, slide, slide-rule, technical, vintage
