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September 22, 2012
Digital Protractor
From The Green Head:
"This is not the flimsy and manually accurate plastic half circle from your old geometry class. This version uses connected rulers forged from stainless steel to digitally measure angles to one decimal place and/or draw lines at specific angles. A great tool for school, home improvement projects, contractors, or just anyone in love with precision or angles."
September 22, 2012 at 03:01 PM | Permalink
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Comments
I have a digital caliper, and my problem with it is that I have no confidence that it is actually accurately calibrated. It's the old middle school science dichotomy between accuracy and precision: sure it will tell me how many femtometers wide something is, but if the mechanism accrues inaccuracy then it will be difficult for me to know, since there's no manual fallback. You have to trust the digital readout.
It's weird for a software engineer to be a luddite, but in this case it's true. I prefer my old-fashioned caliper where I can look at the little markings on the ruler and determine for myself how much accuracy I'm getting.
Posted by: Nathan | Sep 24, 2012 11:12:00 AM
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