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Tektronix 561B Instruction Manual. Protective plastic covers front and back. This is a hi-resolution 86 page printed manual with 5 pages of 11" X 17" foldout diagrams and schematics. It covers both operation and maintenance.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.