I found a picture of the Speedometer while I was looking for tank picture .
I mounted it under the handlebar mount . pulled the handlebar off , drilled and taped a hole all the way through , mounted the speedometer from the bottom on the tank side.
I like having the "Cubby-Hole" behind the windshield to carry stuff , two 2Lt bottles , plus a loave of bread will fit in there at the same time !