whipped this up with an eye to making it work rather than making it nice, so there are some shortcuts taken. The average AAA cell has 5-10 times the capacity of the typical LR44 coin cells used in these devices. The result was a quick-and-dirty mod that allows the calipers to be powered by a AAA battery. However, their batteries often die when left in a drawer for a long time. Manufactured in China and priced low enough that they’re virtually disposable, they get a lot of jobs done in the world where clinical accuracy isn’t required. Many a hacker is a fan of the cheapest calipers on the market.
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