Eddie's Math and Calculator Blog
It's all about mathematics and calculators
Saturday, July 18, 2026
TI-60 and HP 65: Distance by Stadia Tacheometry
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TI-60 and HP 65: Distance by Stadia Tacheometry Introduction The stadia calculation measures the distance from the level or theod...
Saturday, July 11, 2026
HP 20S: The July 2026 Program Collection
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HP 20S: The July 2026 Program Collection Triangulation d = l * sin(α) * sin(ß) ÷ sin(α + ß) Store in the following registers...
Spotlight: AccuMath 400B Slide Rule
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Spotlight: AccuMath 400B Slide Rule Introduction I purchased an AccuMath 400B slide rule at Antique Station, an antique store...
Saturday, July 4, 2026
Swiss Micros DM32: Estimating Earth’s Acceleration at Latitude
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Swiss Micros DM32: Estimating Earth’s Acceleration at Latitude Introduction Earth’s gravitational force is usually set a consta...
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