Optical Measuring Instruments

In order to ensure the long-term accuracy of Delta Light & Optics measuring instruments, they must be handled with care and well looked after. As well as regular cleaning of the window in front of the lens and the calibration standard, the battery should also be used in accordance with the manufacturer's instructions.

The majority of units are used by publicly appointed and sworn surveyors, experts, and test institution employees or in quality management. These units should therefore be subjected to an annual inspection/maintenance.

In agreement with Delta Light & Optics, we offer to recalibrate the R_L and Qd standards every spring at a special rate. The standards are recalibrated at Delta Light & Optics in the DANAK-accredited calibration laboratory for photometry. You will receive a certificate relating to the recalibration in the manufacturer's works on return of the standard.

You will find further information under Calibration.