http://www.bench-marks.org.uk Bench mark database: Recent finds en-gb admin@bench-marks.org.uk admin@bench-marks.org.uk Mon, 1 Dec 2008 17:14:00 GMT Copyright: (c) Ian Peattie, 2008 BM 6.692m (above Alicante datum) is shown on the 1970 1:2500 map at about 30S TF 8830 0241 (ED50) on the N face at the NE angle of the Central Police Station, on the corner of Cloister Ramp and Irish Town. http://maps.google.com/maps?f=q&hl=en&geocode=&q=36+08+29.4+N,+5+21+14.4+W(Flush+Bracket+10963)&ie=UTF8&ll=36.142068,-5.35399&spn=0.006879,0.018046&z=16&iwloc=addr http://www.bench-marks.org.uk/bm26634 SW face, NE parapet of bridge, [17ft. SE of end of parapet,] over NW bank, An Leth Allt, NE side of road [2GL]; SW face, NE parapet of bridge, 17ft. SE of end of parapet, over NW bank, An Leth Allt, NE side of road [3GL] - FB removed 13/09/1961 and resited to NW face, 1 1/2' from N angle of Tigh-an-a-Chaidh "House" (NG 9089 2293) http://www.bench-marks.org.uk/bm26096 Spur 'U', OS compound, SW angle, W face - FB G385 was used in 1949 on an experimental levelling line from Rushett Common TP to Chessington TP, and was variously described as: "on W face, S angle of Spur U, O.S.O., Chessington"; "on W face, 1' from SW angle of Spur "U", O.S.O., Chessington"; "S face, 1' from SE angle, 4th block E. from W entrance to OSO Chessington" - approximate location only; not known whether FB G385 had previously been used at any other location - note that site of OS offices is evidently now Barwell Business Park http://www.bench-marks.org.uk/bm25538 On wooden replica trig pillar held in store at OS HQ http://www.bench-marks.org.uk/bm25506 One of ten OS flush brackets, 10962 to 10971 inclusive, listed in the OS FB register simply as "Gibraltar". "ORDNANCE BENCHMARK A0 (GRID REF. TF 8828 0136), FLUSH BRACKET 10962 ON NORTH-EAST ANGLE OF NAVAL STORES BUILDING SOUTH-EAST SIDE OF ROAD, CLOSE TO THE TOWER. HEIGHT OF BENCHMARK 3.810M (CHART DATUM)" (see http://www.nodc.noaa.gov/archive/arc0001/9000011/01-version/data/0-data/9000011.005 ). Note that TF 8828 0136 above refers to MGRS 30S TF 8828 0136 - i.e. UTM 30S 0288280 4001360 (datum presumably ED50); BM 3.564m (above Alicante datum) is shown on the 1970 1:2500 map at about 30S TF 8828 0138, in a location which answers the description above. "BM1 Naval Stores - Flush Bracket 10962 NE face of building, height 3.775m above Admiralty Chart Datum" (see http://www.pol.ac.uk/ntslf/pdf/gibraltar_report_POLid179.pdf - a (distorted) photo of "An Ordnance Survey bracket at the NE corner E face of stores building." is on page 19). The location is shown as 36° 07.927N 05° 21.250W (datum WGS-84) (http://maps.google.com/maps?f=q&hl=en&geocode=&q=36%C2%B0+07.927N+05%C2%B0+21.250W(Flush+Bracket+10962)&ie=UTF8&ll=36.15146,-5.354118&spn=0.105343,0.21904&z=12&iwloc=addr&om=1 ) ======================================== The location, but not the number, of another Flush Bracket in Gibraltar was already known: "Cloister Ramp". (see http://bubl.ac.uk/org/tacit/TAC/tac34/feelingf.htm ). BM 6.692m (above Alicante datum) is shown on the 1970 1:2500 map at about 30S TF 8830 0241 (ED50) on the N face at the NE angle of the Central Police Station, on the corner of Cloister Ramp and Irish Town. This has now been identified as FB 10963. ======================================== A Flush Bracket also appears to be visible in some photographs of Europa Point Lighthouse (just to the left of the door; see http://www.lighthousedepot.com/database/uniquelighthouse.cfm?value=2176 ). However, it seems that there is NOT a Flush Bracket on the lighthouse; BM 24.708m (above Alicante datum), shown on the 1970 1:2500 map at about 30S TE 8905 9887 (ED50) on the lighthouse, facing west, has turned out to be a cut BM. http://www.bench-marks.org.uk/bm24694 "Railway Bridge", between FB 1362 and FB 1364, so presumably installed as replacement for FB 1363; measured height is similar, so tentatively assumed to be at the same location, but this could well be incorrect. Used in 1989 on relevelling of the line Clare to Wicken; height recorded as 11.2197m. Not in OS online database, so possibly also destroyed http://www.bench-marks.org.uk/bm23731 Building, NE side of road, SW face, S angle - shown in OS database as "FL BR S6502 BLDG NE SIDE RD SW FACE S ANG"; The OS FB register also includes S6502 at SN 7744 0968 [SN1]. Note that S6502 duplicates the FB on Long Crag TP where the FB has also been confirmed as S6502. If anyone is visiting The National Archives at Kew, the records for line SN1 are held at OS 54/682 (Abstract CS 12: England and Wales; Line SN 1 to 7), and the details of this particular FB should be found on page 10. http://www.bench-marks.org.uk/bm22870 outbuilding, Stonea Grange Farm, W face, N angle - note that OS database shows "FL BR S6410 [sic] OUTBLDG STONEA GRANGE FM W FACE N ANG". http://www.bench-marks.org.uk/bm22783 outbuilding, Lochside, SW angle, NW face http://www.bench-marks.org.uk/bm22782 Larchwood Cottage, SE angle, E face - new 1974 http://www.bench-marks.org.uk/bm22781 Waldersey Pumping Station, N face, NW angle http://www.bench-marks.org.uk/bm22780 tower, NE face, 3.8m from N angle http://www.bench-marks.org.uk/bm22779 retaining wall, NW side of Leek Road, NW face, 18.2m NE of gatepost - new 1982 http://www.bench-marks.org.uk/bm22776 Tiumpan Head Lighthouse, accomodation block, S face, SW angle (39.0710m above Stornoway datum, 0.5m above ground) - levelled 1976 http://www.bench-marks.org.uk/bm22775 outbuilding, Hobbister Farm, N face, 1.2m from NE angle http://www.bench-marks.org.uk/bm22774