The optical performance and quality from Leica Geosystems have set a worldwide standard, and this is naturally also true for the eyepieces and ancillary lenses for the instruments. This is important in order not to compromise the instrument optics with lower quality accessories. Eyepieces for comfortable observations of steep sights, up to the zenith, with thread connection. Solar filters for the objectives of all TPS instruments. Autocollimation and magnification eyepieces as well as covers for all eyepieces and lenses.