Brother HD-390I Operator's Instruction Manual page 5

Scale/Value Readings Reference Table on Dial Plate
Test Function
Resistance(Ω)
DC Volt(V)
Null DC Volt(V)
DC Current
（A）
Range
×1
1
×10
×100
×1K
×10K
2
DC 0.1V Value 10(50/10)
2.5V
10V
50V
250V
1000V
2
-Red / +Blue Value
DC ±25V -25, -15, -5, 0, +5,+15,+25
±5V -5, -3, -1, 0, +1, +3, +5
2
DC 50μA
Value 10(50/10)
2.5mA
25mA
Scale/Value for reading
st
Blue Ω Line
nd
Black Line V.A
250
10(50/10)
50(50/10)
250
10(50/10)
nd
Black Line V.A +/-DCV
nd
Black Line V.A
250
250
3
Multiplied
×1
×10
×100
×1000
×10000
×0.01
×0.01
×1
×1
×1
×100
×1
×1
×1
×0.01
×0.1