Six-instrument telephone switchboard (Rankin Kennedy, Electrical Installations, Vol V, 1903)
Summary
Six-instrument telephone switchboard (Rankin Kennedy, Electrical Installations, Vol V, 1903).jpg
Tags
early telephones
manual telephone exchanges
scans from rankin kennedy electrical installations vol v 1903
scans from rankin kennedy electrical installations vol v 1903 undescribed
Date
1903
Source
Scan from Kennedy, Rankin (1903 edition (five volumes) of pre-1903 four volume edition.) Electrical Installations, vol. V, London: Caxton
Link
Copyright info
public domain