Vacuum balance. This balance is able to compare masses in air,inert gas or vacuum. This allows calibration and verification of mass. The metal cylinder at the front of the balance is the UK's national standard kilogram. Photographed at the National Physical Laboratory,Teddington,UK | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Brookes, Andrew / National Physical Laboratory |
Bildgröße: | 4805 px × 3674 px |
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