On Thu, 30 Aug 2007 10:11:22 GMT, Owen Duffy wrote:

they are both 4 digit multimeters which
doesn't mean a lot. They were used to measure 200mV with 1mV resolution,

Hi Owen,

The convention for decades has been to describe them as 3½ Digits, or
2000 count, not 4 digit unless they could represent 9999. Adding
digits does not generally add precision, resolution, monotonicity, or
accuracy. However, as it costs money to add a digit, the underlying
circuitry could usually support "some" of these attributes. Better
instruments perform rounding after the last digit.

73's
Richard Clark, KB7QHC