The Bee Bee is an export version of the Certotrop, sold in the U.S. by Burleigh Brooks (hence the name Bee Bee). It's a folding camera for film pack, cut film, and plates, made of metal with a leather covering.
Though it's a small camera, the Bee Bee is packed with features:
● Ground glass focusing back
● Reflecting finder with bubble level
● Wire frame finder
● Removable lens/shutter assembly
● Rise and fall
● Rack & pinion horizontal adjustment
● Double-extension bellows
The camera was made in Germany by Certo, in the 1930s. Since it was sold in America, the european tripod sockets are fitted with 1/4-20 adapters. This example came with an accessory film back as well.
The Model A, seen here, makes 6.5x9cm images, and the Model B makes 9x12cm images.