Schaltner electrolytic 10A 100V ampere-hour meter
Forbes thermal ampere-hour meter no.37 c.1890
British Thomson-Houston ampere-hour meter
Ampere-hour meter, Teague type no.62 (1891)
Ampere-hour meter, Frager type no. 326 (1890)
Chamberlain and Hookham DC ampere-hour meter
electrolytic ampere hour meter 100V 10A 200 B.O.T. units
