Maker: Director Products
Visual Designer: Alpheus Maple
US Design Patent #: D154558
Price (new): $32.95
Cell type: Selenium
Measure type: 3D incident (2D incident and Reflecting/Averaging available with accessories)
The difference between these Norwood models is negligable. The Model C was simply the B with a new name plate to reflect the company's name change from American Bolex to Director Products. The Model M2 was a Model D with a new nameplate reflecting the company's name change to Brockway (even though the Model D says "Brockway" on the front).
But the Model C actually had something new besides the company name and a revised nameplate: it was the first Color-matic.
Color-Matic was a
The Model C (the later ones, at least) offered this feature, but it wasn't until the Model D that they were officially called Color-Matics.
This meter suffers from the same problems that afflict the previous version: the calculator dial has tiny numerals and it can be tough to read. I have a lot of trouble reading the ASA indicator in anything but very bright light. The Sekonic version had a revised dial and the ASA indicator was a bit more legible.