![Arago polariscope for measuring intensity of polarized light](https://coimages.sciencemuseumgroup.org.uk/424/605/large_smg00030701.jpg)
Arago polariscope for measuring intensity of polarized light
Early Arago Polariscope for measuring intensity of polarized light
Early Arago Polariscope, in case, French, c1870. [stack of glass plates in brass frame] For measuring intensity of polarized light.
Early Arago Polariscope for measuring intensity of polarized light
Case for early Arago Polariscope