It would be up to the fire marshall in your state/county if sight glasses would be approved, maybe have to be weights and measures approved too.
Faces have to show price, older ones only go as far as 99.9/10 and would need the extra price window.....and most computers that would be legal would be 4 wheel bank instead of 3.
Then there might be mandatory leak detection....a containment barrier for the tank, monitering wells, and all kinds of stuff I am not aware of since I have not been in the service field for yrs.
Above ground tanks would not require all that cr*p. Then the air eliminator would not need to be used either.

This pump has a newer type computer in it and uses a 2 part face system.
A smaller face behind the big white surround, this would be a way to overcome the face delima for a pump that would have taken a crankback. You would have to have a 4 price wheel face plate though.

A #300 Tokheim could be less costly to set up...it uses bottom mounts for the computer too.
You will pay near $500.00+ for a NEW 9.99 9/10 computer from Veeder Root....I have seen them on ebay...that is WITHOUT the electronic reset, pulsers for your readout equipment, ect.


Veeder Root Rebuilds.....since 1987
Veeder Root Identification CD
Gas Pump Clock Repair
jkyocom@bellsouth.net