For sale is reprint of Mercury 1101 Tube tester Tube Chart. Tube chart is 40 pages long, dated March 3rd 1973. Tube chart number 1101-7311. If you own Mercury 1101 family tube tester and your chart is old, this book is a must. Real Paper Manual. Quality Printed and Comb Bound. Printed from available copy or scanned from original at 800dpi, restored in Photoshop, Laser printed on premium acid free paper, they will serve for years. Most manuals Include foldout of Circuit Diagram. Cover page printed on Cover Stock.