- Número del objeto9555
- CreadorE. R. Watts & Son (Maker)
- DescripciónInvar tape on wooden reel, marked 107/WG. Trade card stuck to reel
- Fecha1920 - 1925
- Nombre del objeto
- Material
- Dimensiones
- Documentation
- ERW&S[in prsim]/ TRADE MARK/ E. R. Watts & Son/ Engineers' & Surveyors' Instruments and Materials/ 123 Camberwell Rd, London England107/WG