Frontman
Well-known
For ultra compact and fully manual with a real rangefinder and no meter, there are few options. One camera I have which is close is the Olympus Ace. The Ace is an interchangeable lens rangefinder camera, and the first version has no meter. It is a pocketable camera, and there are 35mm, 45mm, and 80mm lenses available for it. The Ace also has a very large viewfinder, which is also nice. Unfortunately, the Ace is not a common camera. It is not ultra compact, but is a small camera, and the lenses are very compact. 
The Kodak Retina cameras are also fully mechanical, and the IIIc I use takes great photos. The Retina does have a built in un-coupled meter, but it is out if the way, and I never use it anyway. The controls are a little difficult to get used to, but once you have the camera figured out, it really is fun to shoot.
The Canonet QL-17 is also a great camera, fully manual, and easy to operate, and it is relatively inexpensive, but I prefer the lenses on the Yashica, Minolta, or Olympus fixed-lens rangefinders. The lens coating on the Canonets is inferior, and prone to fungus and cloudiness.
				
			The Kodak Retina cameras are also fully mechanical, and the IIIc I use takes great photos. The Retina does have a built in un-coupled meter, but it is out if the way, and I never use it anyway. The controls are a little difficult to get used to, but once you have the camera figured out, it really is fun to shoot.
The Canonet QL-17 is also a great camera, fully manual, and easy to operate, and it is relatively inexpensive, but I prefer the lenses on the Yashica, Minolta, or Olympus fixed-lens rangefinders. The lens coating on the Canonets is inferior, and prone to fungus and cloudiness.