Benchmark & 1GL Bolt - Holy Trinity - Blythburgh, Suffolk, UK
Posted by: 
SMacB
N 52° 19.268 E 001° 35.666
31U E 404201 N 5797687
A cut benchmark & 1GL bolt on the south west corner of Holy Trinity church bell tower, Blythburgh. Unusually it is marked V.R. above the cut mark.
Waymark Code: WM10MG9
Location: Eastern England, United Kingdom
Date Posted: 05/28/2019
Views: 3
A cut benchmark & 1GL bolt on the south west corner of Holy Trinity church bell tower, Blythburgh. The benchmark is unusual in that it is inscribed above the levelling line V R, presumably referring to the then monarch, Queen Victoria, who was only in her 10th year as queen around the time of the levelling survey.
|
Square |
Easting |
Northing |
Mark type |
Description |
Height |
Order |
Datum |
Verified year |
Metres above ground |
|
TM |
4504 |
7530 |
CUT MARK |
HOLY TRINITY CH TWR BUTT SW ANG |
9.885 |
3 |
'N' |
1968 |
0.900 |
"First Primary Levelling, England & Wales (1840-60)
This bench mark was used during the First primary levelling, England & Wales (Geodetic line, levelled between June 1848 and December 1851), and was levelled with a height of 34.0030 feet [10.3641 metres] above mean sea level (Liverpool datum). It was included as a side level on the London to Doncaster levelling line. The surveyor's description was No. 390(a). Blythburgh Church. Bolt in South angle of tower ; 3.62 ft above surface (p261)."
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