This card is “so” useful, I wish I’d found it ages ago. The resistances are really very accurate, so it does exactly what it’s supposed to do! I’ve found that zeroing my meter with both probes on the 2 common contact points gives a more accurate result. The contact areas can pick up a bit of dirt & grease, so scratch them with your probes when testing for good continuity. Great & cheap!
Review for CalCard