Digital Viper Additive Injector
The Digital Viper adds inexpensive electronic control and interface, and will operate on TWO METERS SIMULTANEOUSLY! It has the great advantage of being controlled by a Veeder Root programable electronic counter. The same Viper can be used with a meter (or even two meters at once) calibrated in tenths of gallons, gallons, liters, dekaliters or whatever.
For more information see Bulletin No. 36.