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Cut Mark: Reading, Butter Market 
Mark on West corner of the Butter-market-house, Reading Cross ; 2.20 ft. above surface [1GL, Basingstoke to Coventry, Mark No. 38] estimated location.
Location
Grid reference: SU 7167 7341.
Landranger 175: Reading & Windsor, Henley-on-Thames & Bracknell.
Structure: Unknown.
Waypoint: BM4259.
Neighbouring Bench Marks
The nearest fundamental bench mark is Wallingford,
17.40km to the northwest.
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 143.1590 feet [43.6349 metres] above mean sea level (Liverpool datum). It was included on the Basingstoke to Coventry levelling line. The surveyor's description was Mark on West corner of the Butter-market-house, Reading Cross ; 2.20 ft. above surface.
Location
Grid reference: SU 7167 7341.
Landranger 175: Reading & Windsor, Henley-on-Thames & Bracknell.
Structure: Unknown.
Waypoint: BM4259.
Neighbouring Bench Marks
| BM | Reading, St. Laurence's Church 143.18m to the northeast. |
| BM | Reading, High Bridge 144.22m to the southeast. |
| BOLT | Reading, St. Laurence's Church 152.54m to the northeast. |
| BM | Reading, Minster Street 232.59m to the southwest. |
| BM | Reading, Station Road 248.39m to the northwest. |
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 143.1590 feet [43.6349 metres] above mean sea level (Liverpool datum). It was included on the Basingstoke to Coventry levelling line. The surveyor's description was Mark on West corner of the Butter-market-house, Reading Cross ; 2.20 ft. above surface.
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