| GENERAL CHARACTERISTICS ITEM DESCRIPTION | FOUR TO TWELVE CHARACTERISTIC CURVES PER FAMILY,PLATE CURRENT AGAINST PLATE OR GRID VOLTAGE,SCREEN CURRENT AGAINST PLATE OR GRID VOLTAGE,GRID CURRENT AGAINST PLATE OR GRID VOLTAGE,PLOTS UP TO 8 POSITIVE-BIAS CUR-VES FER FAMILY,-UP TO 12 NEGATIBE-BI-AS CURVES/,ACCURATE CURRENT AND VOL- TAGE READINGS DIRECTLY FROM THE CRT SCREEN,11 CURRENT RANGES FROM 0.02 MADIV TO 50 MA DIV,9 VOLTAGE RANGES FROM 0.1 V DIV TO 50 V DIV,11 SERIES-LOAD RESISTORS FROM 300 OHMS TO 1 MEG-OHM,7 GRID-STEP VALUES FROM 0.1 V STEP TO 10 V STEP |