Tektronix 585A

  • Manufacturer: Tektronix
  • Model: 585A
  • Part No: N/A
  • Category: Instrumentation
  • Date Introduced: 1963
  • Ceased Production: 1972
  • Price at Introduction: $2,600 ($20,000 adjusted dollars as of 2014)
  • Color: Blue, Silver-Face
  • Case Material: Aluminum
  • Weight: 74lbs
  • Dimensions: N/A
  • Associated Accessories: Type 82 Dual-Trace Plug-In Module
  • Target Market: Business, Government, Academia
Tektronix 585A


The Tektronix 585A oscilloscope was one of the great Tektronic scopes and has the iconic instrumentation look for its time. It could be found in many laboratories and research centers as it possessed a bay for modular plug-ins which allowed the user to install different instruments for a particular experiment. This model has almost 80 vacuum tubes inside, but unusually also 4 transistors making it a hybrid solid-state and vacuum-tube system.