Muya G92003 Optical Square With Double Pentagonal Prism Muya G92003

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.