De Forest audion 1906-1915
1906-1915
Replica of Daguerre-Giroux camera
1839 (original); circa 1988 (replica)
Gecophone Crystal Detector Radio Set No. 1, 1923
1923
Model of Wright Flyer
1903
Brennan's Gyroscopic Mono-rail Car
1907
Chromolithograph: Amalgamated Society of Engineers Machinists ... by Blades
1904
Brass worksplate, Manning Wardle & Co
1920
Model of a North Eastern Railway coal wagon, c 1915
1910-1920
National Cash Register co model 422X cash register
circa 1910
Creda No 762 electric toaster with open element. No. 4515A
1914-1920
'Detraining in England', print, England, 1914-1918
1914-1918
model double-sided discharge wagon
1910
Working Model locomotive
1922
Novelty model
1955; 1830
Lapel badges, France, 1915-1917
1915-1917
Mill Engine
1903
Glass necklace worn to prevent bronchitis, Greenwich, London, 1914
1914
Dental anaesthetic syringe
1907-1920
Amulet brooch in the shape of a black cat
1914-1918
Handcuffs, steel
1918
Gas mask, Germany, 1915-1918
1915-1918
Coolidge X-ray tube, 1913-1923.
1913-1923
Red Cross fund-raising brooch made from Zeppelin wire, 1917.
1916-1917
Addac adding machine
1926
War memorial plaque, South Eastern & Chatham Railway
1914
X-ray plates
1914-1918
Portable fluoroscope, Europe, 1912-1922
1912-1922
'Electric tonic' amusement machine, Europe, 1915-1925
1915-1925
Stained glass window, Lancashire &Yorkshire Railway
1904-1914
'Cat's whisker' Crystal Radio
1920-1925
North Eastern Railway Dynamometer Car
1906
Battery locomotive, North Staffordshire Railway
1917
London & North Western Railway 1st class corridor brake no. 5154
1906
"Ingersoll" wrist watch with leather strap
1915
Double surface of revolution of constant negative curvature
1910
Burroughs Class 5 hand operated mechanical adding machine with ten registers
1920-1925
Burroughs hand operated adding and listing machine
1917
Revolution of constant negative curvature
1910
Hobbs-type artificial left hand, Europe, 1918
1918
Model of LNWR Third Class railway carriage
1907-1917
Model LNWR luggage carriage, c 1912
1907-1917
model steam locomotive London, Brighton & South Coast Railway
1925
Model London & North Western Railway carriage
1907-1917
Gecophone broadcast receiver, model B.C 3200, 1924
1924
Selector switch, 1903
1903
Impulse sender (dial), 1915
1915
Desk telephone transmitter and receiver (sectioned), 1926.
1926
Radio tuning coil No. 300, 1922-1923
1922-1923
Radio tuning coil No. 100, 1922-1923
1922-1923
Telephone crossbar switch, Swedish Ericsson, 1921
1921