Tektronix TM 504 Chassis

Models in this family

1. 

   TM 504 Chassisproduced 1975–

   The Tektronix TM 504 Chassis is a four-bay mainframe for the TM500 system.

   Cited variants

   Designation	Generation	Vintage	Changes	Source
   TM504A	—	—	Functionally identical, with a fan in the rear panel and relocation of the power switch to the centre underside of the front panel.	w140.com[1]

Sources