3125A / Kyoritsu - Japan
- AC/DC voltage measurement: 30 ~ 600V
- Short circuit current: 1.5mA
- Test voltage: 250V/500V/1000V/2500V/5000V
- Resistance measurement range: 100.0MΩ/1000MΩ/2.00GΩ/100.0GΩ/1000GΩ
- Accuracy: ±5%rdg |±3dgt, ±20%rdg (100GΩ or more)
- Power supply: DC12V: LR14/R14 × 8pcs
- Accessories: 7165A (Line probe); 7264A (Earth probe); 7265A (Guard probe); 8019 (Hook type prod) ; 9181 (Carrying case) ; LR14×8pcs (Battery) ; User manual.

3165/ Kyoritsu
- DC Test Voltage : 500V
- Max measurement value : 1000MΩ
- First measurement range : 1~500MΩ
- Error : |±5% rdg
- Second measurement range : 1/1000MΩ
- Error : ±10% rdg
- AC voltage : 600V
- Accuracy : |±3%
- Power supply : R6P (AA) (1.5V) × 4
- Dimensions : 90(L) × 137(W) × 40(D)mm
- Weight : 330g approx.

3280-70F / HIOKI - Japan
- Resistance measurement: 420.0 Ω to 42.00 MΩ, 6 ranges (±2% rdg)
- AC current measurement (50-60Hz): 42.00 to 4200A
- DC voltage measurement: 420.0 mV to 600 V, 5 ranges (±1.0% rdg)
- AC voltage measurement (50 to 500 Hz): 4.000 V to 600 V, 4 ranges (±1.8% rdg)
- Continuity test: Buzzer at threshold ≤(50Ω ± 40Ω)
- Wire clamp diameter: φ 33 mm
- Dimensions: (WxHxD) 57x175x16 mm
- LCD display: Max. 4199 digits
- Weight: 100g

8031 / Kyoritsu - Japan
- Operating voltage: 110 - 600V AC
- Continuous time: >500V : Within 5 Minutes
- Response frequency: 50Hz/60Hz