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The PoleClinometer slope meter is a specific type of inclinometer (aka clinometer) that’s integral to the shaft of a ski pole. The name is a bit of a mouthful, but it captures the function of the device. Plus, it’s an easy word for Google to find. 🙂
Mathemagics! There’s a bit of info on the geometry that makes PoleClinometer work on the design page.
The sticker is waterproof and UV-resistant custom printed vinyl. Think bumper sticker. The protective sleeve is crystal-clear PVC heat shrink tubing (also waterproof and UV-resistant).
Short answer: Effectively nothing. Long answer: The sticker itself weighs about 0.6 grams (about 0.02 oz). Along with the protective sleeve, the whole combination weighs about 3 grams (about 0.1 oz). And that’s for the largest (18mm) size; the smaller sizes will weigh marginally less. Weight-weenies rejoice!