Don't know what you mean by "swing." Wayne used the Model 100 three times, once in 1917, then in the 1930s and again in the 1950s.

Here are some pictures of some of them: http://petrolianacollectibles.com/wayne%20pumps.htm

Sorry, I don't do PMs, just emails at jhsim@petrocollect.com

Jack Sim

Last edited by Jack Sim; Fri Dec 08 2017 09:18 PM.
Author, 1st & 2nd editions of Gas Pump ID book, 3rd edition is now available at www.gaspumpbible.com
Air Meter ID book also available