1. YDC-1 single needle electrical measuring instrument
2. ZLS10 / 8 battery voltmeter (white shell)
3. ZLS8 / 9a single-pin voltmeter (black watch card)
4. ZLS8 / 9a single needle speedometer-100km
5. YS-3 double needle electric measuring instrument
6. ZLS8 / 9a single needle voltmeter (white watch plate)
7. ZLS8 / 9a single needle mesh pressure gauge-2KV
8. ZLS8 / 9a single needle mesh pressure gauge-400V
9. ZLS8 / 9a single needle mesh pressure gauge-1KV
10. ZLS5 / 8 double needle net pressure gauge
11. ZLS8 / 9a single needle mesh pressure gauge-2.5KV
12. ZLS8 / 9a single needle mesh pressure gauge-35KV TAG：