
"Sonic Tape" measuring device

`Sonic Tape' a device for measuring distances between 2 and 30 feet by means of an ultrasonic beam. Made by Sonic Tape plc of Maidenhead, England according to Patent No. 2082325 of 1982
`Sonic Tape' a device for measuring distances between 2 and 30 feet by means of an ultrasonic beam. Made by Sonic Tape plc of Maidenhead, England according to Patent No. 2082325 of 1982