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Improved systems of control emphasize the need for rapid visual indication and warning equipment. Modern remote‐control panels must show, both positively and with complete reliability, that the system concerned is functioning correctly—or, more important still—if a failure has occurred. These stringent requirements are met by the three‐position magnetic indicator, a product of Dowty Electrics Ltd., Tewkesbury, Glos.
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© MCB UP Limited
1961
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