1GL Bolt: Ashby-de-la-Zouch, Holy Trinity Church   

Bolt in South-east corner of Trinity Church, Kilwardby-street ; 0.96 ft. above surface [1GL, Leicester to Burton-upon-Trent, Mark No. 48]; BOLT HOLY TRINITY CH NE ANG N FACE (129.2100m ODN, 0.3m AGL).

Location
Grid reference: SK 3549 1660.
Landranger 128: Derby & Burton upon Trent.
Structure: Church.
Waypoint: BT0747.

Neighbouring Bench Marks

BOLT	Ashby-de-la-Zouch, St. Helen's Church 589.41m to the east.
BOLT	Ravenstone, Church 5.42km to the southeast.
BM	Broadstone 7.46km to the north.
BM	Damson Cottage 7.52km to the north.
BM	Ibstock, Ravenstone Road 7.57km to the southeast.

The nearest fundamental bench mark is Melbourne, 7.65km to the north.

First Primary Levelling, England & Wales (1840-60)
This bench mark was used during the First primary levelling, England & Wales, and was levelled with a height of 424.5090 feet [129.3903 metres] above mean sea level (Liverpool datum). It was included on the Leicester to Burton-upon-Trent levelling line. The surveyor's description was Bolt in South-east corner of Trinity Church, Kilwardby-street ; 0.96 ft. above surface.