R B Graflex camera, Series B

Single lens reflex camera for 2 1/2 x 3 1/2 inch plates. Ross Xpres lens f:5 1/2 inches, f/4.5-32, No. 87733. Fabric focal plate shutter with six tensions and four slit widths, speeds from 1/10 to 1/1000 second. Rack and pinion focusing, refelx mirror and screen with folding hood. Ground glass focusing screen in reveolving back. In fitted case, with one blockform double plate holder and one ditto cut film holder.

R B Graflex Camera, Series B, made by Folmer-Schwing Division of Eastman Kodak in the United States, from 1924.

Ross Xpres lens f:5 1/2 inches, f/4.5-32, No. 87733. Fabric focal plate shutter with six tensions and four slit widths, speeds from 1/10 to 1/1000 second. Rack and pinion focusing, refelx mirror and screen with folding hood. Ground glass focusing screen in reveolving back. In fitted case, with one blockform double plate holder and one ditto cut film holder.

'R B' stands for 'revolving back', meaning the camera could take either portrait or landscape pictures, simply by revolving the sheet film holder in the back of the camera. To buy the camera with an Anastigmat lens cost $91 in the 1920s.