Triplett 9007 - Manual (Page 33)

Page 32
7.7.5 If the displayed value is less than “200” (decimal point not
shown), a more accurate reading may be obtained by setting
the RANGE switch to a lower range. Rotate the RANGE switch
to the next lower position and observe the reading on the LCD
display. If the RANGE switch is already on the lowest position
(i.e. 200 Ohms), no greater measurement resolution can
be obtained.
Notes:
a) The 2M, 20M, and 200M ranges require several seconds to stabilize.
b) The 200M range reads about 10 LSD high. To obtain an accurate
reading, short the test leads together and observe the residule
reading (usually 8 to 12 LSD). For the best accuracy, subtract
observed reading from subsequent measurements.
c) To obtain the most accurate reading on the 200Ω range, short the
test leads together and note the “residual resistance” reading.
It is typically less than 0.5Ω . Subtract this value from subsequent
readings on the 200Ω range.