Scully Model 280 Tape Machine
My experience with this tape deck is at the electronic music studio at Harvard University in the mid 1980s. They had two of the two track Scullys side by side and we'd do tape delays by running the 1/4" tape across the two decks. We'd use a microphone stand to adjust the delay time, pulling the tape farther away from the decks to make it longer.
The other thing I remember was how stern Ivan Tcherepnin, the professor, was with his warning that when slowing down from FF or RW, you had to brake by using the opposite direction to slow it down before stopping it with the Stop button.
Thanks for the info and great pics here.