Numerik

Numerik displays use edge-lit curved plastic plates to display symbols such as the digits 0 to 9.

Interior of a Numerik display

GR products using Numerik displays

• 1150-A 300 kHz, 5-digit frequency counter, 1963
• 1150-B 400 kHz, 5-digit frequency counter, 1965
• 1153-A 10 MHz, 5-digit frequency counter, 1965
• ...?

Links

• IND-0300
• IND-1801
• Experimenter August 1964 describing Numerik Display
• GB Patent 847,972 filed 22 Jan 1958
• KGM Electronics IND-1803 Numerik Indicator (General Radio) @ industrialalchemy.org
• KGM edge-lit display "Numerik Indicator" model IND-0300 by 50sTransistorRadios @ YouTube (shows partial disassembly)