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|discontinued=1974 | |discontinued=1974 | ||
|designers=Al Allworth | |designers=Al Allworth | ||
manuals= | |manuals= | ||
* [[Media:070-0545-00.pdf|Tektronix 1A4 Manual]] (PDF) / [https://w140.com/mmm/tek-1a4.pdf Alternate] | * [[Media:070-0545-00.pdf|Tektronix 1A4 Manual]] (PDF) / [https://w140.com/mmm/tek-1a4.pdf Alternate] | ||
* [[Media:Tek 1a4 fcp jan 1967.pdf|Tektronix 1A4 Factory Calibration Procedure, January 1967]] | * [[Media:Tek 1a4 fcp jan 1967.pdf|Tektronix 1A4 Factory Calibration Procedure, January 1967]] |