The Muya G92003 Optical square features sturdy metal housing, double pentagonal prism allows for easy to stake out the right angles.
Used for determining 90° sightings.
Comprises of two penta prisms of quality optical glass in sturdy aluminium housing.
The accuracy of a right angle set with the optical square is approximately ±1cm at 30m.
Used for: placing points on line, setting out curves, offset measurements, determining the horizontal and detail plans.