Punch mark
From TrigpointingUK
A 'Punch Mark' is an uncommon type of type of triangulation mark.
17 instances are recorded in the OSGB36 list [1]. Mark descriptions include "On vent", "On iron bolt" and "In Aluminium square". Locations include Water tanks, Reservoirs and Church towers. No Punch Mark has yet been found and no photographs exist.
T:UK | Station name | Order | Computed | Block |
---|---|---|---|---|
TP12013 | Lint Brae | 3 | 1961 | HY52 |
TP24888 | Potters Wood Wtr Tank | 4 | 1957 | TQ53 |
TP11128 | Druggon Hill Wtr Tank | 4 | 1966 | NZ42 |
TP22025 | Peter Brotherhood Wtr Tank | 4 | 1961 | TF22 |
TP17486 | Rufforth Aero Wtr Tank | 3 | 1954 | SE38 |
TP18658 | Manvers Main Colly No 1 Headgear | 4 | 1954 | SK39 |
TP13046 | Ringstone Hill Resr | 3 | 1974 | SK39 |
TP11218 | Cleave Control Twr | 4 | 1953 | SS30 |
TP20238 | Stratton Resr | 4 | 1953 | SS30 |
TP13483 | Lincoln St Marys Ch Twr | 3 | 1980 | TF05 |
TP13543 | Sunlight House Aux | 3 | 1979 | SD80 |
TP13046 | Ringstone Hill Resr | 3 | 1980 | SK39 |
TP21554 | Guildford Cathedral | 4 | 1981 | SU77 |
TP13483 | Lincoln St Marys Ch Twr | 3 | 1988 | TF05 |
TP22391 | Irthlingborough Sec Mod School | 4 | 1962 | TL05 |
TP22610 | Peters Green Wtr Tank (1980) | 4 | 1980 | TL32 |
TP24593 | Alpha Clay Plant | 4 | 1956 | TQ47 |