I've just pulled out my stash of NX resistors and had a look (under a magnifying glass, to be sure) - the 3k74 is orange-purple-yellow-brown-brown and the 6k98 is blue-white-grey-brown-brown. In my book, the brown on the end represents a
1% tolerance, not 10%. So these values must be fairly critical, otherwise
why would the panel designers specify resistor values to 2 decimal places? I stand by my previous example of why the correct EOL resistors supplied with the panel
must be used, depending on the application (zone doubling or non zone doubling). Also, sorry to be pedantic (again), but your example above is partly wrong: 3k74 - 10% = 3k37 (rounded down) not 3k66, and 3k74 + 10% = 4k11 (rounded down) not 4k15. The other two values are OK.
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