See Saw Shutter
The See Saw Shutter was a shutter made of brass, patented by Lancaster.
simplicity was the ingenousity of Lancaster's shutter patents image by Luis Cozeto (Image rights) |
The See Saw Shutter was a shutter made of brass, patented by Lancaster.
simplicity was the ingenousity of Lancaster's shutter patents image by Luis Cozeto (Image rights) |