Ideal for working on steep terrain


Our Meridian instruments are used all over the world for surveying, road and cableway design, topographic surveys and levelling, among other applications. They work without navigation systems and electronic components; thanks to their light weight and compact design, they are perfect for surveying work in the mountains and in rough terrain in general. They fill the gap between simple measuring tape and complex levelling instruments or theodolites.

Wyssen Universal Compass


The Wyssen-Compasses were specially developed for work in rough terrain and, thanks to the very steep visor, are mainly used in the mountains as well as for the construction of cable cars, etc.. 


The device allows measurements of horizontal and vertical angles as well as azimuths and is very suitable for levelling. The following devices are combined in this instrument: 


  • A liquid-damped precision compass (as described under MK-2001). 
  • Two fixed collimators (as described under MC-1004). 
  • A circular bubble for accurate levelling of the instrument 
  • A sighting slit above the prismatic magnifier and an opposite sighting line for very steep sighting while simultaneously reading the compass 
  • Rotatable base with 9.5 mm / 0.375 inches thread for a tripod

Prismatic compass


This liquid-damped compass is used for measuring the azimuth and for recording as well as staking compass lines. It has a housing made of robust acrylic glass. The compass disk is divided into two concentric partial circles. The outer circle can be read with a magnifying prism loupe (V15x). The accuracy is 0.5° resp. 0.5g. The inner graduation allows readings of 5° directly and 1° by interpolation (respectively 5g and 1g).



The MC-1004 inclinometer is used for height and slope measurements as well as for levelling and distance measurements. Due to its own weight, it settles completely vertically. The inclinometer is also supplied with a scale plate to be able to determine the angle of a wall. The two collimators have a multi-divided scale with the following readings: 


  • ± 100%, ±50 Gon resp. 45°. 
  • Distances: 5m to 500m (base 2m). 
  • Most common slope ratios (1:1, 2:3, 4:5, etc.).