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OSBM Bolt: Axmouth Church Tower 
Professor Whewell's Bolt inside Axmouth Church Tower - approximate location; probably not actually an "OSBM" Bolt, nor a "1GL" Bolt.
Location
Grid reference: SY 2565 9101.
Landranger 192: Exeter & Sidmouth, Exmouth & Teignmouth.
Landranger 193: Taunton & Lyme Regis, Chard & Bridport.
Structure: Church.
Waypoint: OS0002.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Beer,
4.47km to the west.
Second Geodetic Levelling, England & Wales (1912-21)
This bench mark was used during the Second geodetic levelling, England & Wales, and was levelled with a height of 16.9800 feet [5.1755 metres] above mean sea level (Newlyn datum). It was included on the North Petherton to Flax Bourton (Axmouth to Perry Farm Branch) levelling line. The surveyor's description was Professor Whewell's Bolt inside Axmouth Church Tower.
Location
Grid reference: SY 2565 9101.
Landranger 192: Exeter & Sidmouth, Exmouth & Teignmouth.
Landranger 193: Taunton & Lyme Regis, Chard & Bridport.
Structure: Church.
Waypoint: OS0002.
Neighbouring Flush Brackets
| 1831 | Axmouth 174.93m to the northeast. |
| 2149 | The Combe 1.08km to the east. |
| 1832 | by Stedcombe House Lodge 1.11km to the northeast. |
| 2150 | Axmouth Beach 1.15km to the south. |
| G3245 | Seaton, Hilton House 1.67km to the southwest. |
Second Geodetic Levelling, England & Wales (1912-21)
This bench mark was used during the Second geodetic levelling, England & Wales, and was levelled with a height of 16.9800 feet [5.1755 metres] above mean sea level (Newlyn datum). It was included on the North Petherton to Flax Bourton (Axmouth to Perry Farm Branch) levelling line. The surveyor's description was Professor Whewell's Bolt inside Axmouth Church Tower.
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