Refers to part:SNB107 ATT07 ATT-07 TT6811/00 TT681100 TT681100A TT6811/00A WTT7. Temperature Thermal Transmitter Sensor Sender Smiths / Lucas SNB107 A-TT07 WTT7 TT6811/00 & TT6811/00A. These were popular add-on accessories fitted to classic cars in the 1960's and 1970's.
