For sale is reprint of Precision Apparatus Company Supplementary Tube Test data for 10-12, 10-15, 10-20, 10-22, 10-54 Tube Testers. Book is 25 pages, contains Obsolete, Infrequent, Special and European tubes. List contains common obsolete 2 digit tubes..
If you purchased one of those testers from Ebay and it did not come with Tube Test Data or your roll is out of date, here it is.
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. Cover page printed on Cover Stock.