. . . "William McWhirter"@en . "Voltmeter and ammeter"@en . . "Institution of Electrical Engineers"@en . . "British"@en . . . . . . . . . . . . . . . . . . . . . . "Newton on Ayr Academy"@en . "Electrical engineering"@en . . "William McWhirter"@en . . . . . . . . . . . . . . . . . . . . . "William McWhirter"@en . . . "William McWhirter (1851\u20131933) was a Scottish electrical engineer, grandfather of Norris McWhirter, who invented the combined voltmeter and ammeter, from which such (analogue) subsequent meters were developed."@en . . . "1933-03-06"^^ . . . . . "Marian"@en . "William McWhirter (1851\u20131933) was a Scottish electrical engineer, grandfather of Norris McWhirter, who invented the combined voltmeter and ammeter, from which such (analogue) subsequent meters were developed."@en . . . . "1933-03-06"^^ . "1851"^^ . . . . . . . . . . . . . . . . . "32227623"^^ . . . "3811"^^ . . . . "1092053463"^^ . . . . . .