• Country
• Great Britain (UK)

• Manufacturer / Brand
• Thomas Industrial Automation Ltd.; Altrincham

• Year
• 1964 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 345520

Click on the schematic thumbnail to request the schematic as a free document.

• Wave bands
• - without

• Power type and voltage
• Other, details in remarks or not known.

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Multi-Range Electrometer VC.99A - Thomas Industrial Automation

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Notes

• This instrument is complementary to the VC.99, with the same features, but some additional ranges:

  • A microcurrent meter measuring currents from 1 pA up to 600 µA in eight switched ranges. The use of heavy degeneration ensures a low voltage drop on current measurement.
  • Direct measurement of potentials of either polarity from 0 to 2,000 mV in two switched ranges, with an input resistance of greater than 10¹³ Ω.

  Using an external potential source (500V test supply), resistance up to 10¹⁴ Ω can be measured.

  More information is available in the uploaded specificatons.

• Mentioned in
• -- Original-techn. papers. (From “Electronic Engineering”, volume 36, year 1964, September.)

• Author
• Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Thomas Industrial Automation Ltd.; Altrincham