Owens Dust Counter, no.44, by Casella, London, in case with accessories
- Object Number:
- brass (copper, zinc alloy), cardboard, complete, felt, mahogany (wood), metal plated (unknown), nickel plated, paper (fibre product), steel (metal), wood composites
box: 5.3 x 33.7 x 12.1 cm
- dust counter
- Meteorological Office
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