oscilloscope and its applications / Philips Trillingsmeetapparaten / Philips' gloeilampenfabrieken, afd. industriele meet- en regelapparaten UHF tubes communication and measuring equipment : technical documentation of Philips U.H.F. tubes DC 80 - EC 80 - EC 81 - EC 55 / … Marconi instruments 1954 : a cataloque of the telecommunication measurement equipment and industrial electronic instruments / Marconi Instruments Gelijkstroommachines : theorie en metingen / A.F.P.H. Bloemen en R. Cazemier Group specification for quartz crystal units for oscillators : second draft / International Electrotechnical Commission , Technical committee No. 12: Radio-communication Sub-committee 12A: Crystals dynamoelektrischen Maschinen / S.P. Thompson : Hft.7 dynamoelektrischen Maschinen / S.P. Thompson : Hft.10 industriële wereldfederatie / I.J. Blanken Automatic potentiometers for measuring, controlling and recording in industry and laboratories / Philips Cathode-ray oscilloscopes and video test instruments / Tektronix Beginsel van versterkers / samengesteld bij de Artillerie School Fort Oostbatterij
