According to Tim Rohr's findings:

Gilbert & Barker 10 T-176F 11 x 19
Gilbert & Barker 10 T-176 (Semi-Rotary), T177 12 1/2 x 24
Gilbert & Barker 10 T-176 (Dual Piston), T-179 12 1/2 x 26

Jack Sim


Author, 1st & 2nd editions of Gas Pump ID book, 3rd edition is now available at www.gaspumpbible.com
Air Meter ID book also available