This little article (I blew it up so you could read it easier) appeared in the National Petroleum News, February, 1928.

Jack Sim
Author, Gas Pump Identification book, and Air Meter Identification book

[This message has been edited by Jack Sim (edited 12-19-2006).]
Author, Gas Pump Identfication books 1st & 2nd Editions & Air Meter Identification books
We rebuild ECO air meters and sell parts.