This is the Forbes and Lomax 1GRD250, a one gang 250W rotary dimmer on a invisible plate and brass knob, manufactured by Forbes and Lomax (leading edge rotary dimmer with push on/off switch).
The Invisible plate is inspired by the 1930s glass switches but with all the advantages of modern technology, the Invisible Lightswitch has become synonymous with Forbes & Lomax. Switches and dimmers have 3mm bevelled transparent acrylic plates which are secured without the use of fixing screws.
The plates are flush to the wall and are supplied with brass, nickel silver, stainless steel or antique bronze toggle switches, dimmer knobs or buttons. 0.5mm 'inner plates' of primed aluminium sit behind the Invisible plates which can be decorated in the same way as the walls giving the illusion that the wallpaper or paint finish runs seamlessly behind the switch plate. Invisible plates and rocker switches with 2mm thick acrylic plates complete the range.
Note: this dimmer is not suitable for use with trailing edge transformers.
|Switches & Sockets Specific|
|Back Box Depth||35mm|
|Brand||Forbes and Lomax|
|Plate Dimensions||86mm x 86mm|
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