Tektronix Type R 491 Spectrum Analyzer T-Connector

Tektronix Type 491 Spectrum Analyzer Front Panel Knobs, Controls, and Parts

Tektronix Type R 491 Spectrum Analyzer Power Knob

Tektronix Type R 491 Spectrum Analyzer 2-Set Screw Knobs

Tektronix Type R 491 Spectrum Analyzer Chassis to Rack Mount Frame Bolts

Stainless Steel Handles for 3U Rack Mount Amplifier Equipment 4.25" Tall

Tektronix Type R 491 Spectrum Analyzer 2-Push on Knobs

Tektronix Type R 491 Spectrum Analyzer Release Wave Guide