Constructed of pressed brass. To the front is a rotating disc with 3 apertures of 5mm, 8mm and 10mm. The rear sliding tube has a clip for locating the discs. There are 21 discs with 22 slots. The box is made of cardboard.
Ask the Dealer
I served a Scientific Instrument Making Apprenticeship with W F Stanley and expanded my expertise in other companies. In 1976 I opened a shop in Bermondsey, London. For the last 15 years I have traded in Portobello Road, London but now I am only selling online. I have been a regular exhibitor at the Scientific Instrument Fairs in London and I am a founder member of the SIS Society. I am continuing my scientific instrument restoration business. Email: firstname.lastname@example.org