Company of Proprietors of the Birmingham Canal Navigations
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Ocker Hill Works
BW165/27/1/4/9
"Pulsometer Water Softener Ocker Hill"
Gives "Particulars of tests &c", showing when cleaned and by whom, what charged with, counter reading, temperature of feed water and results of water softness tests. Part of HR Dunkley collection.
January-April 1906
BW165/27/1/4/9
1 volume