See Saw Shutter
The See Saw Shutter was a shutter made of brass, patented by Lancaster.
https://farm8.staticflickr.com/7600/16977651868_972112212e.jpg |
simplicity was the ingenousity of Lancaster's shutter patents image by Lui Cozeto (Image rights) |
The See Saw Shutter was a shutter made of brass, patented by Lancaster.
https://farm8.staticflickr.com/7600/16977651868_972112212e.jpg |
simplicity was the ingenousity of Lancaster's shutter patents image by Lui Cozeto (Image rights) |