The Argus C-twenty is a 35mm fixed-lens rangefinder made US company Argus. It has a bakelite body and is noticeably thinner and lighter than the C3. It also has a double exposure prevention and a multiple-stroke film advance lever.
- Lens: 44mm f/3.5 coated Argus Cintar (triplet), f/3.5 - f/22, focus down to 2.5ft
- Shutter: Between-the-lens: 1/25, 1/50, 1/100, 1/200 + "B". Manually cocked.
- Viewfinder: Separate viewfinder and rangefinder windows