Maker: DeJur Amsco
Cell type: Selenium
Measure type: reflecting/averaging
DeJur was most well known in the 40s and 50s for amateur movie equipment that they imported from Germany, but they also dabbled in other things like enlargers, meters, and the occasional still camera. In the 60s the company went into office photocopiers, and sold out in 1974 when the owners, Harry and Ralph DeJur, retired.
This is a streamlined version of the Model 5s, but carries it much farther: instead of just rounding the edges, they went with more of a teardrop shape overall. It's also much less colorful, but the white-on-black, especially with the grid lines, makes it pretty easy to read.