Eco Air meter - Model 240- Are these rare?

I found this some time back and finally got it home,, This was restored 15-20 years ago and tucked away ever since. The hand crank works, as well as the hoses on pull out reel. The unit has been rewired and all lights work.

 

NOT rare...how bout I give you 500.00 for it.

 

not that rare looks like the feet are missing worth about 2000.00 to 2500$nice find

 

Its bolted to a steel plate. Found it in a guys basement hideway and no longer had a need for it as he was selling his house

 

They are pretty much in demand from the guys that collect gas station stuff .... worth a lot more than a restored pump .... and much more lighter.