Key Information
Reference code
K/PP107/11/1/19
Title
Resistance box, [1850-1875]
Date(s)
- [1850 - 1875] (Creation)
Level of description
Item
Extent
1 item
Scope and content
Resistance box with for measuring resistance in 1, 2, 4, 8, 16 and 32 mile lengths of telegraph wire. Consists of a wooden box with brass plates and knobs.