Photometer for testing proofs or trials held in a testing tank defines an optimum position for the testing tank in a seating by applying a detector device.

摘要

A photometer (1) with a casing (4) has a working beam path (2). Working beams from a light source (6) pass through a preliminary filter (8) and are focussed by a lens (10) on a point (12). A filter (14) rotates on a carrousel (22) enabling preset wavelengths to be measured.