The two types of scales: a Hanging Scale and a Floor Scale. The Hanging Scale using a Rack and Pinion Gear and two springs to tell us how far much weight is on the scale. The Pinion Gear turns and ...

Why guess a weight when you can make a scale? Learn how some scales use a spring to measure the mass of objects--and build your very own!

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Joseph F. Fritch (1846-1932), a ...