Testing thermometers. Laboratory technicians analysing thermometers using testing equipment. The thermometers are lowered into an electrically heated water bath (not seen). The readings from these are then compared with the standard laboratory thermometer. Photographed at the National Physical Laboratory,Teddington,UK,in the early 1920s | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / NATIONAL PHYSICAL LABORATORY (c) CROWN COPYRIGHT |
Bildgröße: | 5327 px × 3543 px |
Modell-Rechte: | Derzeit liegt noch kein Release vor. Bitte kontaktieren Sie uns vor Verwendung. |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |