- Object number9549
- CreatorE. R. Watts & Son (Maker)
- DescriptionInvar tape on wooden reel, marked 101V. For connecting levelling measurements from the cornice and Whispering gallery to the cathedral floor
- Production date1920 - 1925
- Object name
- Material
- Dimensions
- reel Diameter: 45.3 cm
reel Height: 3.4 cm - Documentation
- InscriptionERW&S [in prism]/ TRADE MARK/ E. R. Watts & Son/ Engineers' & Surveyors' Instruments & Materials/ 123 Camberwell Rd, London, England101/V