electron Tube Data sheets
	'Cartomatic II' GM7630 & 'Cartomatic III' GM7633

The GM7630 is an instrument for testing tubes and for measuring Volts, Current, Resistance and Capacity. The GM7633 is a stripped GM7630 with only the tube tester.

Documents: GM7633 Directions For Use (1,420,358 bytes) GM7633 Circuit (736,581 bytes) (nl) EF86 Card Example (156,737 bytes) Card Dimensions (42,844 bytes) Instructions for making cards (207,949 bytes) (nl) GM7630 Service Doc (updated 2006-07-07) (1,177,028 bytes) (nl)