GolfOMeter - Golf Gadget of the Month?

.

It's an odd little instrument... and I'm not really sure what it does... so it may not be worthy of the prestigious Golf Gadget of the Month designation.

From what I can see, though, this rare vintage "New Haven Golf Meter" measures yards and miles. I don't not know how it works.... or... if it works, but it looks like a pretty awesome collector's item to me.

If anyone reading has used a Golf-O-Meter, I'd love to know more about it.  It might just help me to take my game to the next level this year.

Or not.