Triplett 9007 - Manual (Page 27)

Page 26
7.4.4 If the display indicates overrange, i.e. “1- - -”, disconnect the
test probes from the circuit and rotate the RANGE switch to the
next higher position. Reconnect the test probes to the circuit
LCD display. If the RANGE switch is already at the highest
position (i.e. 700 VAC), the input voltage exceeds the
measurement capability of the meter and should not be
measured.
7.4.5 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. Disconnect the probes
from the circuit and rotate the RANGE switch to the next lower
position. Reconnect the test probes to the circuit and observe
the reading on the LCD display. If the RANGE switch is already
on the lowest position (i.e. 200m AC), no greater measurement
resolution can be obtained.