Old School Engineering

Slide rules were used to perform mathematical calculations prior to the invention and wide-spread availability of calculators. This page describes the many different things you can do with a slide rule, or you can watch any number of YouTube videos on the topic. Just like calculators today, there were a plethora of different manufacturers and […]

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HP calculators aren’t for everyone, but many engineers wouldn’t use anything else. The Museum of HP Calculators has lots of interesting information. Of particular interest is the HP-01 which was the first calculator watch released in 1977. You can find them listed on eBay today for thousands of dollars. If you are a fan of […]

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