Knowledgebase

News/Information we find valuable, to us and/or our customers, will be placed on this site. Please check in occasionally as we continuously upgrade reports, publications, et cetera.



Our latest news :

01.12.2015 On January 4th, 2016 1A CAL GmbH takes over the calibration facility of Dr. Hans Vormann located in Lohmar near Cologne.
01.09.2014 1A CAL takes over the calibration facility from Bureau Veritas located in Nuremberg with all its employees and its calibration capabilities.
01.07.2014 Welcome Mr. Friedhelm Schmidt as Calibration Technician at 1A CAL GmbH
28.01.2014 Accredited by the Deutsche Akkreditierungstelle (DAkkS) in accordance to DIN EN ISO/IEC 17043:2010 -Proficiency Testing-
02.01.2014 Welcome Mr. Heinrich Siebald as Calibration Technician at 1A CAL GmbH
01.06.2013 Welcome Mr. Löffler at 1A CAL GmbH
24.05.2013 Extension of our accreditation for the following parameters and functions: AC/DC High Voltage, DC Power, Frequency, Revolution Speed, AC/DC Clamp Meters and On-Site Calibration
11.07.2012 The new webpage is now online
01.06.2012 Welcome Mr. Bohrer at 1A CAL GmbH
30.11.2011 Certified in accordance with DIN/EN ISO 9001:2008
16.12.2010 The full accredited calibration of Fluke 792A and 5790A incl. Widebandoption is available from now!
15.12.2010 Accredited by the Deutsche Akkreditierungstelle (DAkkS)
19.07.2010 Founding of 1A CAL GmbH


  • Comparison
    as PDF-Download :
  • Josephson-Effect
    as PDF-Download :
  • planar multijunction thermal-converter (PMJTC)
    as PDF-Download :
  • PTB Annual Report: PMJTC bis 100MHz
    as PDF-Download :
  • PTB Annual Report: kleinere MU bei ACDC-Stromstärketransfer durch Potenzialsteuerung
    as PDF-Download :
  • MIL History
    as PDF-Download :
  • MEASUREMENT OF RESISTANCE RATIOS – TWO TECHNIQUES CURRENT RATIOS: DIRECT CURRENT COMPARATOR – DCC
    as PDF-Download :
  • AccuBridgeTM TOWARDS THE DEVELOPMENT OF A DC CURRENT COMPARATOR RATIO STANDARD
    as PDF-Download :
  • Oscilloscopes and their Calibration
    as PDF-Download :

We thank PTB and MI for the publication of extracts.