The Laboratory of Optic Metrology is the only accredited laboratory in Portugal for equipment calibration in the fields of photometric and topography. We perform calibration of the following equipment: Photometric Lux meters Luminance meters Colour meters Spectrophotometer and optic filters Optical fibres Optical power measurers Wavelength measurers Laser sources Optic attenuators Optic spectrum analysers and time-domain optic reflection measurement unit (OTDR). Topography Theodolite Total stations EDM’s Optical levels Rotating laser levels Non-accredited services Collimators Distance meters Invar rods Topographical sight Laser levels