Product number (P/N): 66,
Keywords/Tags: 66 | SONIC TAPE 100C | 100C
Date of intro: ~1983,
Number of keys: 49, #Key-Grey: 36, #Key-Red: 1, #Key-White: 12,
Classification: / Desktop / Special / Custom,
Featuring: Scientific functions, Square root, PI, Programmable,
Known Serial-numbers: 349272 (List of all S/Ns from TEXAS INSTRUMENTS)
Collector value: 9/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Info: This model TI-66 Programmable calculator has been fitted into a SONIC TAPE 100C and reads out distance on the calculators LCD display.
You just point it at the wall in a room and it gives you an instant measurement in either feet or meter.