- Inventarnummer9548
- HerstellerE. R. Watts & Son (Maker)
- BeschreibungInvar tape wound on wooden reel marked 69.5 ft
- Datum1920 - 1925
- Objektbezeichnung
- Material
- Format
- reel Diameter: 46.3 cm
reel Height: 3.2 cm - Documentation
- 69-5 FTERW&S [in prism]/ TRADE MARK/ E. R. WATTS & SON/ Engineers and Surveyors' Instrumennts and Materials/ 123 Camberwell Rd, London.