Mercury Model 501 Component Substitutor Manual $8.50 Mercury Model 501 Component Substitutor Manual quantity Add to cart Category: Mercury Description Description For sale is reprint of Mercury 501 Component Substitutor Manual. Manual is 11 pages long, include part list and Circuit Diagram . Related products Mercury 1101K Tube Tester Assembly Manual $8.99 Add to cart Mercury 1400 In-Circuit Capacitor Tester Manual $7.99 Add to cart MERCURY 1101 Tube Tester Manual and Tube Charts $8.49 Add to cart Mercury 2000 Tube Tester Updated Tube Chart $11.99 Add to cart