This is an old version with numbers and wire a little smaller. See the image that compares old and new design.
Sundial based on the "chain" design of the equinoctial sundial at St Katharine Docks (London). Chained Sundial shows the time using the shadows of the numbers over the central cylinder, instead of the shadow of a central bar (gnomon).
The central cylinder must point to the north/south when used on the northern/southern hemisphere. This design doesn't work on the tropics.
9.222 w x
6.86 d x
3.631 w x
2.701 d x