[Phys-L] Re: Antique Gas Pump Question

[ajm at CSUPOMONA.EDU (John Mallinckrodt)]

> They had a hand operated pump that one used to pump the gasoline up
> into the glass cylinder at the top. You filled the cylinder to the
> number of gallons you wanted to purchase, then placed the hose
> nozzle into the gas tank opening.

The next big advance came when they figured out a way to accommodate
those who didn't know how much gas they wanted to purchase, thereby
also answering the question

> why is the ten on the bottom?

;-)

--
John "Slo" Mallinckrodt

Professor of Physics, Cal Poly Pomona
<http://www.csupomona.edu/~ajm>

and

Lead Guitarist, Out-Laws of Physics
<http://www.csupomona.edu/~hsleff/OoPs.html>