Two coloured perspective drawings
Two coloured perspective drawings, 11" x 7.5", on one mount:- "Boby vertical type water softening plants (lime soda process) fitted with (a) quartz sand filter; (b) wood wool filter
Details
- Category:
- Water Supply Metering
- Object Number:
- 1932-254
- type:
- drawings
- credit:
- William Boby & Co. Ltd.
