Perpetual Explorer 2x3 3C Patch leather Find an object of known

Find an object of known size at the distance you need to measure and thus determine the angular size which you can subsequently convert to distance

eliminating mental calculation errors

[Custom Astronomical Quadrant with equal hours and a calendarium for specific latitudes

The background material reflects perpendicular to the observer and is flooding its surroundings

Digital 28-page full manual (in English)

Perpetual Explorer 2x3 3C Patch leather Find an object of knownBetween sea and mountain tops, islands and shores, night and day, we continuously explore and overcome natural challenges, navigating using landmarks and Polaris alone. Looking up, we're striving to see the surf above us, icy summits, or the stars. Conversely, looking down, if there is no valley nor water, we need to go on, never ceasing to explore. The patch depicts a range of icy mountain tops, engulfed in perfect Fibonacci spiraling ocean waves,