Tag: lithium ion

Review: Princeton Tec’s Apex Pro

Princeton Tec’s Apex Pro has been my headlamp of choice for the past five years. It hasn’t been an unblemished record, but the pros continue to outweigh the cons. Nary a day goes by that I don’t use it, whether taking the dog for a walk after dark, hunting for a dropped widget in the …

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Review: Pieps 30° Plus inclinometer

If you have reason to measure slope angles accurately, you would be hard pressed to beat the convenience of Pieps 30° PLUS. It’s a small, light device that measures slope angle in any orientation quickly and accurately. How does it work? With some electronic wizardry on a chip that measures gravitational acceleration in three axes. …

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