The Tektronix Type 67 is a time-base for 560-series scopes, providing calibrated sweep rates from 1 μs/div to 5 s/div, introduced in 1961.
The 67 does not have a single-sweep mode.
It uses a 6DJ8 as the trigger input amplifier, followed by another 6DJ8 as a Schmitt trigger.
The 67 was replaced by the 2B67 which is very similar but has a single-sweep mode.
Specifications please add
Original prototype of Type 67 plug-in