An English Admiralty Beam Compass by Cary, Porter & Co. Ltd., Mid-19th century or later, the long wooden beam fitted with adjustable brass sliding head and fine adjustment screw, the fitted wooden case stenciled 'ADMIRALTY' and marked 'H.O.134,' the interior with printed label for 'Cary, Porter, Ltd., Opticians & Scientific Instrument Makers to the Admiralty, 7 Pall Mall, London S.W.,' beam compass lg. 40 1/2, case lg. 41 5/8, wd. 3 1/8, ht. 2 in. Lot to be sold without reserve. This lot is subject to the following lot symbols: ¤ ¤ Unless indicated by the ¤ symbol next to the lot number (or bearing an explicit statement such as 'No Reserve' or 'Without Reserve'), which denotes no reserve, all lots in the catalog are subject to a reserve. The reserve is the minimum hammer price that the seller is willing to accept for a lot. This amount is confidential and does not exceed the low estimate value. For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing