Sylvania 620 Tube Tester Instruction Manual with Calibration Instructions, Schematic, and Settings for Testing Obsolete and Seldom Encountered Tube Types
*EXCLUSIVE* - Includes full 600MA Calibration instructions, NOT AVAILABLE ELSEWHERE (why? Because we wrote them!)

This is a PAPER package, professional spiral bound, quality copy ~and~ INCLUDES ADDITIONAL CALIBRATION INFO not found elsewhere.

Exactly what you need to use and operate your quality Sylvania 620 tube checker. 

This deluxe package contains all of the following:

  • Operating Instructions
  • Calibration Instructions (Including full 600MA calibration instructions, written by us, which were NOT covered by the original manual).
  • Machine Schematic
  • Setup Chart for Obsolete and Seldom Encountered Tube Types (ie: 01-A, #10, #45, #50, etc...)

Thanks.  Please note that the roll chart setup data is NOT part of the package.  The Setup Chart Data that is included here is for the very early tube types that pre-date the built-in roll chart.