The science of measurement, embracing both experimental and theoretical determinations at any level of uncertainty in any field of science and technology.
Wndsn Range Calculator Web App
High-precision range calculator. Companion to Wndsn Telemeters.
The distance from eye to measurement, and the height of the measurement, form two sides of a right triangle, and thus determine an angle. We're making use of this trigonometric principle in the Telemeters, but you can also use it with great accuracy given you have accurate values to calculate with. We originally built the online range calculator for educational and experimental applications but used it later on several expeditions for field navigation.