It is the flow of electric charge i other words It is  best-known as the flow of electrons through conductors such as copper wires. Ray Export are leading in the Electricity, Electricity Manufacturer, Electricity Suppliers, Electricity India, Electricity Exporter, Educational Lab Equipment, Physics Lab Instruments, Physics Equipment.
 Dials Interchangeable use with Demonstration Meter Interscale. Each dial comprises a laminated plastic panel 315 x 115 mm with a sealed molded box which contains the shunt or voltage multiplier appropriate to the scale.
Dial Range 0 - 10A, Input AC Current 
For use with Demonstration Meter Interscale. Each dial comprises a laminated plastic panel 315 x 115 mm with a sealed molded box which contains the shunt or voltage multiplier appropriate to the scale.
Dial Range 0 - 15 V, Input AC Voltage 
  
Portable type, having the large display of 3½ digits, type LCD, power 9 Volts battery, accuracy +1 digit.
Digital Ammeter
D.C. Voltage 200 mV - 1000 V ± 0.5% ± 2 digitA.C. Voltage 200 V - 750 V ±
 1.2% ± 10 digitD.C. Current 200 ?A - 10A ± 1% ± 2 digitResistance 200 
Ohms - 2000 kOhms ± 1.2% ± 8 digitMax. Display 1999Display size 16 x 48 
mm, 3½ digit LCDRange ManualTransistor Test YesDiode Measurement 
YesContinuity Test YesAccessories Battery, Testing leads with 
Instruction Manual, CE-marked
  
D.C. Voltage 200 mV - 600 V ± 0.5% ± 2 digitA.C. Voltage 200 V - 600 V ±
 1.2% ± 10 digitD.C. Current 200 ?A - 10 A ± 1% ± 2 digitResistance 200 
Ohms - 2 MOhms ± 0.8% ± 2 digitTransistor Test NPN & PNP Range 0 - 
1000Test Voltage VCE - 3VDisplay Size 15 mm High LCD , 3½ digit, 7 
SegmentsDiode Test YesContinuity Test YesFuse Protection F 200mA / 250 
VoltsAccessories Battery, Testing leads with Instruction Manual, 
CE-marked
  
D.C. Voltage 200 mV - 1000 V ± 0.5% ± 1 digitA.C. Voltage 2 V - 750 V
 ± 0.8% ± 3 digitD.C. Current 200 ?A - 10A ± 0.5% ± 1 digitResistance 
200 Ohms - 20 MOhms ± 0.8% ± 1 digitMax. Display 1999Display size 25 x 
60 mm, 3½ digit LCDRange
Portable type, having large display of 3½ digits, type LCD, power9 Volts
 battery, accuracy +1 digit.DC voltage rangesa) 0 - 199.9 mV - 200 mVb) 0
 - 1.99 V - 2Vc) 0 - 19.9 V - 20 Vd) 0 - 199.9 V - 200 VDC current 
rangesa) 0 - 199.9 ìA - 200 ìAb) 0 - 1.99 mA - 2mAc) 0 - 19.9 mA - 20 
mAd) 0 - 199.9 mA - 200 mAe) 0 - 10 Amp.
  
This dual-purpose bench meter offers an analog quadruple range. A slide selector for amps/volts automatically selects internal shunting, indicating whether on amps or volts reading and secures the input sockets from the possibility of an incorrect connection. Input is made via a dual 4 mm or terminal type connection and zeroing is achieved by the screw adjustment on the front of the meter.DCA 100 mA - 100 mA - 1A - 5ADCV 100 mV - 1V - 10V - 50 V + 5% 
A 6 V motor, hand driven mounted on base
A 6 V motor, hand driven mounted on the base. When driven produces a nice glow in the bulb.