Details

Eighteen items in a brown folder with title ‘A.S.W.E Transistor and Diode Tester’ on one side of the tab and ‘Digital Panel Meter’ on the other side of the tab. Contains data sheets, releases, drafts etc. for digital panel meters. Item 1 – Three single page data sheets for the ‘Digital Panel Meter Type DPM 700’. The three sheets are slightly different. Item 2 – Three items. Four page information sheet, compliments slip and photograph for Integrated Photomatrix Limited ‘The MC902 LSI chip in a miniature d.p.m.’. Dated July 1971. Item 3 – Two page data sheet for Analogic AN2510 digital panel meter. Dated 1970 Item 4 – Two items. Single page Avo Advance Information press release titled ‘New miniature digital panel meter’ and dated May 1971. Also handwritten sheet attached ‘Design story, front cover pix & inside pix, 1000 words’. [See naest Item 5 – Single page ‘Tentative specification’ for ‘Miniature digital panel meter with solid state display’ dated 6 May 1971 Item 6 – Single page ‘Schematic diagram’ for ‘Miniature digital panel’. Not dated Item 7 – Five typed pages with handwritten changes titled ‘Miniature digital panel meter uses LSI chip and solid state Ga An P display’. Not dated. Item 8 – One small page and four typed pages titled ‘Miniature digital panel meter uses LSI chip and solid state Ga An P display’. Not dated. Item 9 – Three typed pages titled ‘Miniature digital panel meter uses LSI chip and solid state Ga An P display’. Signed by P Bartlam, Chief Engineer (Instruments), Integrated Photomatrix Ltd and dated 22 July 1971. Item 10 – Three typed pages titled ‘Now a miniature digital panel’. Not dated. There are two copies with the same wording but slightly different formatting. Item 11 – Three typed pages titled ‘Avo digital panel meter [DPM 700]’. Not dated. One of the pages is an amendment slip. Item 12 – Single typed page titled ‘New miniature digital panel meter [DPM 700] with solid state display’. Dated 10 August 1971. There are two copies with slightly different wording.` Item 13 – Small typed page titled ‘Information required for article featuring miniature digital panel meter’. Dated 1971. Item 14 – Single typed page Avo News Release titled ‘Miniature digital panel meter [DPM 700] with solid state display’. Dated 1 September 1971. Enquiries to Norman Penwarden, Dover Item 15 – Single typed page price list for ‘Digital panel meter [DPM 700]’. Not dated. Price for one £120. Item 16 – Single page extract from ‘Electro Optics March 1971’ pp 5-6 titled ‘Putting the spotlight on semiconductor lamps’ by Carl Moskowitz, Monsanto Chemicals. Item 17 – Two page extract from ‘Electronics Today 18 June 1971’ pp 7-10. Includes article titled ‘LED’s display bright future’ and photograph of Monsanto digital display. Item 18 – Eight press cuttings regarding digital panel meters dated 1971.