Truck Scales: How They're Made

I like this show, and this was a particularly interesting episode. A huge truck scale with 50-foot steel beams uses a tiny strain gauge chip (seen at 1:54) smaller than a fingernail to measure the weight. The scale is so accurate that the additional weight of a worker shows as 140 additional pounds above the test weight of 10,000 pounds (seen at 5:24-8)



-Tom.