If the image above appears blurry, or you would like to see a larger image, please view the full-sized image of the RLR diagram.
RLR(1975) is 11.2m below BM Rifleman's Bolt
For all data add 5.619 to refer to RLR(1975)
Principal Datum (formerly Ordnance Datum) is approx. 1.23m below MSL(1965-83).
North Point (611/011) was replaced by Quarry Bay (611/010) and they can be
considered to be the same site.