Details of exhibit
- Exhibition:
- 1885 [Thirtieth] Photographic Society of Great Britain Exhibition
- Exhibit title:
- Patent Adjustable Shutter, with Pneumatic Regulation for Exposure
- Exhibitor:
- H. & E. J. Dale
- Exhibit No.:
- 765
- Exhibit type:
- Photographic equipment and supplies
- Process:
- [Not Listed] ()
- Award:
- none
