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Lens from the rebuilt lighthouse of 1908
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This lens
originates from the rebuilt lighthouse of 1908. It is constructed
from cut glass prisms and is quite rare and unique. It can now be
found in the Bluefin Tuna Interpretation Centre at Ballantyne's
Cove wharf (See below).
The lens is a third order dioptric triple
flashing light having the following characteristics: flash...2.5
seconds, eclipse...1.00 seconds, flash...2.5 seconds,
eclipse...1.00, flash...2.5 seconds, eclipse...4.75 seconds. The
total period being 7.50 seconds. The illuminant is petroleum
vapour burned under an incandescent mantle. Candle power, 55, 000.
(Sessional papers
20a to 21. Vol.#XLIV, No.11, 1910.Pg.#70)
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