This Japan half frame camera is called the Ricoh Caddy. The camera measures
4 7/16 inches wide by 2 11/16 inches tall (camera body edge to camera body edge).
The lens is a Ricoh f2.8 25mm lens.
The Seikosha shutter speeds are: B, 4, 8, 15, 30, 60, 125, 500.
F-stops are:2.8, 4, 5.6, 8, 11, 16.
The camera has a focusing ring listed in meters with a couple of click stops.
This camera does NOT have a rangefinder.
There's a built-in bubble type meter that correlates with numbers on the exposure