Abbe refractometer. The Abbe refractometer was the first commercial refractometer, invented by Ernest Abbé in 1869. Although they have a long history and several modifications have been made to ...

Currently not on view Credit Line National Bureau of Standards ID Number PH.326622 catalog number 326622 accession number 261654 Object Name refractometer Measurements overall: 9 3/4 in x 16 5/8 in x ...

After passing through the samples, light enters the measuring prism and other lenses, reaching the field of view equipped with a reading scale (see Figure 4). Dependent on the application, the scale ...