1000 m Laser Rangefinder with Angle Compensation

Time-of-flight laser ranging: a 905 nm pulse travels at c, reflects, and returns — the elapsed nanoseconds convert to millimetre-accurate distance in real time.

Laser rangefinders exploit the constancy of the speed of light to measure distance with precision impossible by acoustic or optical triangulation at field ranges. The device emits a collimated 905 nm class 1 laser pulse, times the round-trip to picosecond resolution, and divides by 2c to give range. Angle compensation mode applies the cosine correction (true horizontal distance = measured range × cos θ) automatically — essential for shooting uphill or downhill where uncorrected range would overestimate the horizontal component.

• 6× magnification optics, 1000 m maximum range (reflective targets)
• ±0.5 m accuracy; angle compensation ±90° with horizontal distance mode
• Scan mode for moving targets; fog/rain mode for adverse conditions
• Compact 110 g body; CR2 battery included

Every purchase directly funds independent physics research at the Golden Physics Project.