The Tektronix 015-0169-00 is a strain gage adapter designed to interface with the 3A10 differential transducer amplifier plug-in. After the 560 scope series was discontinued, the PS501-1 MOD 730E was available as an alternative.
The output connector is a Bendix PC06A-10-6P type.
Strain gage adapter with original Bendix connector
Modified with LEMO 6 pin connector