Instrument Knobs feature illuminated figure dials.
Press Release Summary:

Illuminated via SMD LEDs on flexible PCB strip inside figure dial made of proprietary lightguide material, knobs promote view of indicator characters, even in darkness. Figure dials are available with illuminated indicator lines and dots as well as in customized versions. All marking is done on underside to avoid character deterioration, and available LED colors are super-red, yellow, orange, green, blue, and white. Mixtures of colors are available.
Original Press Release:
Elma Expands Line of Illuminated Knob Figure Dials
FREMONT, California, April 3, 2006 - Elma Electronic, a leading designer and manufacturer of rotary components and electronic packaging products, has expanded its line of illuminated knob figure dials. Making it easier to view indicator characters, even in darkness, the knob figure dials are now available in a wide selection of size and styles.
This unique product range is a complete system to illuminate the figure dial under a knob. Illumination is accomplished via SMD LEDs on a flexible PCB strip inside a figure dial made of proprietary lightguide material. The illumination of the lightguide figure dial makes viewing of the indicating characters easier in all ambient light conditions, from a dark room to sunlight.
These figure dials are available with illuminated indicator lines, dots and in customized versions. Standard LED colors are super-red, yellow, orange, green, blue and white. Mixtures of colors are available as a special order, as are colored lightguide figure dials.
The lighting sets (lightguide figure dial and flexible LED strip) are designed to be used with the extensive array of standard Elma knobs in the 20 to 30 mm sizes in several styles. Standard lightguide figure dial marking is available off the shelf, and customer-specific marking is available. All marking is done on the underside of the dial so there are no problems with character deterioration over time. Additionally, the lighting sets can be used in conjunction with other manufacturer's knobs.
About Elma Electronic
Elma Electronic Inc. is a leading manufacturer and supplier of enclosures, backplanes, cabinets, cases, and "ready-to-run" packaging for CPCI, Rugged COTS, VME/64x, VXI, PC and custom bus structures. Elma's component product line offers a wide selection of top quality switches knobs and LED arrays. The company has been a worldwide supplier of dependable, high performance products for over 35 years. Elma operates three facilities in the continental United States plus has locations in Switzerland, Germany, France, the United Kingdom and Israel.
Elma Electronic Inc. is located at 44350 Grimmer Blvd., Fremont, CA 94538 USA. Telephone (510) 656-3400 - Fax (510) 656-3783. www.elma.com
Company Contact: Justin Moll, Elma Electronic
510.490.7388 510.490.1853 fax e-mail: jmoll@Bustronic.com