Hi Claude, You wrote:
>The new BSS glossary does not even list the term, > "bifilar". This is not so - it is there under "dial types", and reads: bifilar ~: invented in 1922 by Hugo Michnik in its horizontal form, although it can be on any plane. The time is indicated by the intersection on the dial plate, of the shadows of two wires (or other lines in space) stretched above and parallel to it. The wires often run E-W and N-S, with their (different) heights above the plane being a function of the location of the dial. It may have equiangular hour markings, and hence can be delineated to show many kinds of hours. Whilst we might discuss whether the definition needs extending to cover non-straight wires, I think this covers the most usual forms, Regards, John -------------------------------------------------------------------- Dr J R Davis Flowton, UK 52.08N, 1.043E email: [EMAIL PROTECTED]
