Rollei delayed action device for use with cable release and a shutter which has a good range of speeds, in a leather case c.1930. Rollei Delayed Action Device circa 1930
Spherical rubber ball and rubber tube in red and black zebra striped rubber. Delay valve 0-3, 2, 1/2/4 secs. In cardboard carton. Thornton Pickard 'Time' Shiutter Rubber Bulb Release
