Wood, glass, metal and various crystals; Inscription: Polarized Light Apparatus - Education Set for Students - Directions for Use (H. 5.1 cm, W. 35.2cm, D. 13.8 cm)
Dr Martin Gregory on Newton’s Light Apparatus Location: Science School
Made by John J. Griffin & Sons Ltd Kemble Street, Kingsway, London; designed by Charles Vernon Boys, 1911
Cup: brass (H. 7 cm, D. 12.6 cm); tripod: steel (H. 13.7 cm, D. 20 cm); cover: celluloid (H. 5 cm, D. 12.6 cm); Inscription: C V Boys' patent 16732/1911 made by Griffin London
Dr Martin Gregory on the rainbow cup Location: Science School
Wood, tinplate, plastic, paper and brass. Inscription on front: Radio Rex. Inscription on side: Before using rub triangle on wires/ Patented/ MAR 11 1913/ NOV 10 1914/ DEC 19 1916/ SEP 24 1918/ FEB 7 1922 (h. 16.4cm, w. 16cm, d. 14.7cm)
Dr Martin Gregory on Radio Rex Location: Science School
Iron, copper, wax, wood and vulcanite. Inscription: 1969/ Max Kohl/ Werkstätten für Präzisionsmechanik/ Chemnitz i.S. (h. 35.5cm, w. 29.2cm, d. 62.6cm)
Dr Martin Gregory on the induction coil Location: Science School
Steel, brass, wood and rubber. Inscription on plate fixed to engine: E P Made in Germany. Inscription on label: Retard < Ignition Advance > (h. 23.5cm, w. 40.5cm, d. 21.5cm)
Dr Martin Gregory on the toy gas engine Provenance: Unknown Location: Science School