- [nb-NO]Object number[nb-NO]9555
- [nb-NO]Creator[nb-NO]E. R. Watts & Son (Maker)
- [nb-NO]Description[nb-NO]Invar tape on wooden reel, marked 107/WG. Trade card stuck to reel
- [nb-NO]Date[nb-NO]1920 - 1925
- [nb-NO]Object name[nb-NO]
- [nb-NO]Material[nb-NO]
- [nb-NO]Dimensions[nb-NO]
- [nb-NO]Documentation[nb-NO]
- ERW&S[in prsim]/ TRADE MARK/ E. R. Watts & Son/ Engineers' & Surveyors' Instruments and Materials/ 123 Camberwell Rd, London England107/WG