The Pamphlet Collection of Sir Robert Stout: Volume 23

Class 13

Class 13.

442 a Woodford, James, Agent—:Professor Wheatstone's Telegraphic Instruments, affording a simple and easy means of communication, suitable for Public Offices, and where immediate correspondence is required. The arrangements being in ordinary alphabetical language, any person can receive and transmit a message without previous instruction. Constructed with permanent Electric Magnet—no Batteries or Acids are required. Further particulars will accompany the Instruments.
443 Woodford, James, Agent.—Telegraphic Instrument and Battery.