photograph, Attraction Meter
Attraction Meter [with] Bathometer. Image SME No. 167*; 1876 Catalogue Nos. 421A and 421B. NB: one sheet depicts two items.
Attraction Meter [with] Bathometer. Image SME No. 167*; 1876 Catalogue Nos. 421A and 421B. NB: one sheet depicts two items.