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Tired of looking at your speedometer to know how fast you're going? make a wind-speed-meter calibrated to your car's speedo.
The dimensions of the wood used in this project are scale-able. I eyeballed based on availiable wood lying around. - 1/2" X 12" X 12" plywood - ~ ...
The wood plate must be cut into a semicircle. see this project http://www.instructables.com/ex/i/3F01629E4BA41029AC23001143E7E506/ for more on drawing arcs and circles with string. Use a jigsaw or other formidable ...
Attach the handle with a few nails. Make the handle comfortable for you. Ours is at a 45deg angle to the perpendiculars because that seemed like the most ...
Pull out the nail used to draw an arc in the wood plate. Drill a hole just wider than the nails you are using into an end of ...
This is arguably the unsafe step. Don't do anything to ridiculous! Have a driver go (the speed limit) down streets at constant velocities (10 mph, 20 mph, 30 ...
Digital Anemometer (wind meter)by dan
NonTraditional Speedometer for Used / Homebuilt Carby MySoulWanders
LED Speedometerby abo_hosni
Time to change oil?by Phil B
Digital speedometer, tachometer & engine temperature displayby abo_hosni
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