Clean the objective lens and eyepiece only with specialized optical cloths and lens cleaner. Never use rough dry cloths, as they scratch the anti-reflective coatings.

Sight the exact same target. The difference between the readings should perfectly equal 180∘180 raised to the composed with power

Sight your first target point, enter its known coordinates ( ), and press (or DIST then REC ). Rotate to the second target point, enter its coordinates ( ), and measure.

This article serves as a comprehensive guide based on the TCR805 User Manual to help operators maximize the potential of this instrument, ensuring safe, efficient, and accurate work. 1. Getting Started: Unpacking and Setup