SV- 5Y diesel vehicle smoke meter Separate design made the control unit ... the test unit Digital time display SV- 5Y diesel vehicle smoke meterwhich can test perceived polluted things in diesel ... and plate number of province, city and district. For vehicle match for the test result, when using it, customers ... size Control unit: 610x500x330mmTesting unit: 500x350x330mm SV- 5Y diesel vehicle smoke meter