Designed to increase longevity

Increase operational longevity with the VR-10/4 Analog Mechanical Computer. Features pricing up to $3.99 per gallon and contains four transfer money wheels, operating at one-fourth normal speed while doing the same job. This means significantly longer life – particularly at higher price-per-gallon values and higher flow rates.

Key Features

  • Can be equipped with various options such as pulse generators and electric reset for self-serve operations
  • Factory installed “Quick Change” gearbox can be ordered for fast conversion to the metric system

Key Benefits

  • Four transfer money wheels offer greater operational efficiency, reliability
  • Unique worm gear drive prevents wheel overthrow
  • Exclusive high-resolution clutch to improve accuracy and readability
  • Precise and repeatable positioning of the wheels at the zero point during reset
  • Sales rates up to $60 per minute



150 rpm maximum of right-hand money wheel (20 gallons per minute at $2.999 per gallon). $200 per minute maximum at any price per gallon. 

Number of computer wheels 

Two banks of 4 wheels each for money and gallons, front and back. 

Maximum display capability 

Money: $999.98. Volume: 999.9 units. 

Size of figures 

First and second money wheels: 10.2 mm high, 6.4 mm wide (0.400", 0.251"). All other 20.6 mm high, 12.7 mm wide (0.812", 0.500"). 


Gallons: 7 digits.  

Money: 7 digits.  

Right-hand wheel of the money totalizer also has the four transfer design with 5-cent increments. 

Price setting figures 

0.000 to 3.999 dollars per gallon. (Optional to $9.99). 


Double handle or rotary reset mechanism. Readily accepts existing electric resets. 

Operating temperature range 

-40 degrees to +71 degrees C (-40 degrees to +160 degrees F)