Telescope by Galileo (replica)
1610; 1923
'Cat's whisker' Crystal Radio
1920-1925
Beyer-Garratt South African Railways Locomotive
1929
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)
Rolling ball clock by E. Dent and Co
1920
Marconi-Sykes magnetophone
1923
Photographer's 'Birdie'
circa 1920
Petrol locomotive
1925
BBC 'Bijou' Crystal Set Receiver Type 6
1923-07
Experimental television receiver used by JL Baird in demonstration, made 1925-1926
1925-1926
Baird Phonovision disc, 1927-1928
1927-1928
Freud electronic laughing ball
1990-96
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
Model steam locomotive LMS 'Royal Scot'
1927
Wooden prosthetic hand with rigid fingers
circa 1920
Framed poster advocating vaccination against smallpox
1923
Primax moving iron loudspeaker, 1924-1927
1924-1927
Model of Great Central Railway "Atlantic" Express Locomotive
1903 (original); 1982 (model)
Model of a pendulum clock based on Galileo's design
1921
Amplion loud speaker with wooden horn, 1925
1925
Gold amulet in the form of a cobra
2000-100 BCE
Three-valve radio receiver, 1922-1925
1922-1925
Savoy Hill 'Meat Safe' microphone stand
1923
Locomotive worksplate
1920
Telephone crossbar switch, Swedish Ericsson, 1921
1921
Neolithic flint scraper
4000-2001 BCE
Crystal radio receiver
circa 1923
Replica of Morse's second model of telegraphy apparatus, 1934
1934
Earth thermometer with bent stem, c. 1925.
1925
Volume 1 No. 1 of "Television" monthly magazine, 1928
1928
Addac adding machine
1926
Marconi-Sykes Magnetophone microphone
1923
Working Model locomotive
1922
Novelty model
1955; 1830
Vaccination set, London, England, 1925-1928
1925-1928
Portable thermometer screen
1925
Radio Times volume 1 No. 1, 1923
1923
Straight horn loudspeaker, 1921-1926
1921-1926
Popular Wireless no. 1 vol. 1, 1922
1922
Infant death rate and income
1926-1928
Burroughs Class 5 hand operated mechanical adding machine with ten registers
1920-1925