Hickok-ks-15560-l1-l2-tube-tester-tube-data-roll-chart-3200 291 – Manual (PDF)
Hickok KS-15560-L1/L2 Tube Tester Model 291 Manual: Access tube data roll chart for accurate testing and troubleshooting. File size: 17.1 MB.
Hickok KS-15560-L1/L2 Tube Tester Model 291 Manual: Access tube data roll chart for accurate testing and troubleshooting. File size: 17.1 MB.