Conveniently storable in the instrument container, the GMP111 offers high positional accuracy due to their small size. The GMP111 is mounted in a polymer holder with 1/4″ thread fittings, has a built-in levelling bubble and is supplied with the GLS115 four-section pole and attachable point (1/4″ thread). With this arrangement a point can be measured with very high precision. GMP111 Leica prism constant: 17.5mm. Range: 2000m.