Triplett 9007 - Manual (Page 37)

Page 36
7.10.5 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. 2n F), no greater measurement resolution can be obtained.
Notes:
a) On the 2nF and 20nF ranges, the meter may indicate residual
capacitance. i.e The meter reading will not go to zero. This is
caused by the internal capacitance of the meter circuitry or the
test leads.
b) The Test Leads may introduce error when used on the low
capacitance ranges (like 2nF and 20nF). To minimize the error,
note the difference in reading with the leads inserted into the
meter and with the leads removed from the meter, and when
using the test leads, subtract the noted difference from the
displayed reading.