Telescope by Galileo (replica)
1610; 1923
Beyer-Garratt South African Railways Locomotive
1929
'Cat's whisker' Crystal Radio
1920-1925
Gecophone Crystal Detector Radio Set No. 1, 1923
1923
Mousetrap Camera
1834-1836
National Diesel Engine
1928
Barber-Colman knotter
circa 1925
Replica of Daguerre-Giroux camera
1839 (original); circa 1988 (replica)
Marconi-Sykes magnetophone
1923
Rolling ball clock by E. Dent and Co
1920
Photographer's 'Birdie'
circa 1920
BBC 'Bijou' Crystal Set Receiver Type 6
1923-07
Petrol locomotive
1925
Experimental television receiver used by JL Baird in demonstration, made 1925-1926
1925-1926
Baird Phonovision disc, 1927-1928
1927-1928
McKay artificial left arm
1920
Desk telephone transmitter and receiver (sectioned), 1926.
1926
Replica of the first Morse telegraph, 1835
1934
Siemens Neophone telephone, 1929
1929
Roving frame
1927
Elm Street Mill Cross-Compound Steam Engine
1926
Primax moving iron loudspeaker, 1924-1927
1924-1927
Wooden prosthetic hand with rigid fingers
circa 1920
Framed poster advocating vaccination against smallpox
1923
Model of a pendulum clock based on Galileo's design
1921
Amplion loud speaker with wooden horn, 1925
1925
Savoy Hill 'Meat Safe' microphone stand
1923
Gold amulet in the form of a cobra
2000-100 BCE
Three-valve radio receiver, 1922-1925
1922-1925
Neolithic flint scraper
4000-2001 BCE
Telephone crossbar switch, Swedish Ericsson, 1921
1921
Locomotive worksplate
1920
Earth thermometer with bent stem, c. 1925.
1925
Replica of Morse's second model of telegraphy apparatus, 1934
1934
Crystal radio receiver
circa 1923
Marconi-Sykes Magnetophone microphone
1923
Volume 1 No. 1 of "Television" monthly magazine, 1928
1928
Addac adding machine
1926
Radio Times volume 1 No. 1, 1923
1923
Portable thermometer screen
1925
Vaccination set, London, England, 1925-1928
1925-1928
Popular Wireless no. 1 vol. 1, 1922
1922
Straight horn loudspeaker, 1921-1926
1921-1926
Brownie crystal receiver and pair of Lissen headphones, 1924-1927
1924-1927
Infant death rate and income
1926-1928
Burroughs Class 5 hand operated mechanical adding machine with ten registers
1920-1925
Self-winding wristwatch by John Harwood
1928
Demonstration radio receiver
1926
Chain of Office
1927
Burndept Ultra IV wireless receiver, glass back No. 4798, 1923
1923