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"condition nearly all the prisms in the top and the centre and *bottom panels are broken or chipped badly, the carriage revolves *in a very erratic manner the conical rollers being the worse for "wear, the clockwork is also worn badly, and to bring the light "up to date you require a new optical apparatus consisting of 4 "panels, instead of the existing & panels whereby you would "obtain a broader beam of light and consequently a greater area "of candle power, a new podestal, Bath and float, the optical "apparatus to revolve and float on mercury, thus reducing fric- "-tion to a minimam, now clockwork of the improved type with the *principal spindles revolving in ball bearings and made adjust- *-able so that each spindle cɛn be raved without removing the *fra.00,
this scheme would involve an expenditure approxilately "of £3,000 or more, the second scheme would be to have a new "podental and Bath and flost and new clockwork, and to re-erect *the old optical apparatus on the new pedcatal and Lath and float, *it would then be impossible for it to work erratically when re- "-volving in mercury, you would require a temporary revolving *light to be exhibited during the construction and this could be "obtained from Lessra, Chance Bros. on loan through Sir Thomas *Latthews, Engineer-in-Chief, Trinity Nouse, at a nominal cost. *This schone would involve an expenditure approxi...ately of $1,000 "or more. I give the life of the existing clockwork and the re- "-volving carriages about 5 years, but for its immediate efficien- "-ay you require 9 atcel conical rollers, 9 steel studs and 9 *steel thickness pieces, for the revolving carriage, you also *require a light governor to be fitted on the clockwork in place "of the existing ball governor. One of the existing conical "rollers and studs and tuickness pieces should be sent home as a "pattern when ordering, this will involve an expenditure approvim *-ately of £40. Upon receipt of this report it was decided to effect immediately the repairs costing £40 and to provide in the
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