- [nb-NO]Object number[nb-NO]9548
- [nb-NO]Creator[nb-NO]E. R. Watts & Son (Maker)
- [nb-NO]Description[nb-NO]Invar tape wound on wooden reel marked 69.5 ft
- [nb-NO]Date[nb-NO]1920 - 1925
- [nb-NO]Object name[nb-NO]
- [nb-NO]Material[nb-NO]
- [nb-NO]Dimensions[nb-NO]
- reel Diameter: 46.3 cm
reel Height: 3.2 cm - [nb-NO]Documentation[nb-NO]
- 69-5 FTERW&S [in prism]/ TRADE MARK/ E. R. WATTS & SON/ Engineers and Surveyors' Instrumennts and Materials/ 123 Camberwell Rd, London.