pre spirit of '76 they are 31"
post spirit of '76 inclusive 27"

And while we're at it, I'll note that this leg change also was linked to a door change - smaller door (w/ 31" legs) to the larger door (w/ 27" legs).

More info: http://www.pbresource.com/legs.html

https://pinside.com/pinball/forum/topic/gottlieb-leg-size-question

I pick-up games with the wrong legs all the time...usually too short. Old williams legs I think are 28.5 as opposed to the 27 and 31 of Gottlieb, I suspect I have a pile of williams or some other random brand legs in my garage. The levelers are usually rusted in place so it does suck to have to buy new legs but getting 4 new easy to adjust levelers makes it nice.

Depends on the manufacturer.

Williams and Bally each utilized legs of approximately 31".

Gottlieb legs can be distinguished by the absence of vertical ribs and the rounded corners of the base where the metal is folded over and the hole tapped for the leg levelers is more of a square corner, even though the tip has a radius, than Bally or Williams.

This base configuration will stand true for a Gottlieb 27" leg compared to Williams legs. Bally legs in the 70's and 80's were 28.5" long with totally square corners at the leveler mount plate. Williams legs throughout time have a broader radius at the base.

The base of the legs for your El Dorado and Volley, even though the leg lengths are different, should be dimensionally the same. Not sure what the other set of about 31" long legs are from. Post a few pictures and we can help you identify them.

If they have the same exact dimensionality at the base as the legs on your ED they are Gottlieb and correct for your LH