Might anyone on the list have information of a dial, the engraved base of which can be seen in the formal gardens of the Victoria Falls Hotel, Zimbabwe at 17.93 S, 25.84 E. The hotel itself appears to know nothing.
The base is signed Casella London and a company of that name is still in existence in London yet they have no records of it in their quite extensive archives – indeed they are not aware of making any fixed dials at all though they are known for some portable dials and other scientific instruments like sunshine recorders. Clearly, the one in the hotel gardens is quite rare. If interested there is more about this intriguing puzzle at www.bit.ly/suninfo. Patrick
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