H & M TRAIN SET TWIN CONTROLLER DUETTE VINTAGE WORKS WELL CONTROL | Collectables | Gumtree Australia Charles Sturt Area - West Lakes Shore | 1308999832
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H & M Power Controllers - Old & New, A Good Review - YouTube
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HAMMANT & MORGAN H&M Duette twin track controller.*SUPERB*BOXED*TESTED* | #486135449
Hammant & Morgan 'Duette' electric mice / model train controller (1970s) – The Technojunk Files
HAMMANT & MORGAN H&M Duette twin track controller.*SUPERB*BOXED*TESTED* | #486135449
oorail.com | Wiring a H&M controller to a Model Railway - YouTube