• Country
• United States of America (USA)

• Manufacturer / Brand
• Beckman Instruments, Shasta, Shockley; Richmond (CA)

• Year
• 1985

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 278090

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

• Number of Transistors
• 2

• Semiconductors
• 2SC1959 2SC1959 LM358 LM358 LM358 LM358 CD4070 CD4070 ICL7106 1N4148 1N4001 unknown_Display

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / PP3: 1 x 9 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Circuitmate Digital Multimeter DM25L - Beckman Instruments, Shasta,

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 76 x 160 x 36 mm / 3 x 6.3 x 1.4 inch

• Notes

• Circuitmate DM25L Specifications:

  DC Volts: 200 mV - 1000 V, Ri=10MΩ, Acc: ±0.8% + 1 digit
  AC Volts: 200 mV - 750 V, Ri=10MΩ, Acc: ±1.2% + 10 digits

  DC Amps: 200 uA - 10 A, VB: 10A / other: 700 / 325 mV, Acc: ±2.5%+3d / ±1.25%+1d
  AC Amps: 200 uA - 10 A, VB: 10A / other: 700 / 325 mV, Acc: ±3%+4d / ±1.8%+4d

  Resistance: 200 Ω - 2000 MΩ
  Diode test: Current: 1.0 mA ± 0.6 mA, test voltage: max. 3.2 V.
  Transistor test: Two sockets for NPN and PNP transistors.
  Continuity switch: Continuity beeper ON-OFF

  Capacitance: 2000 pF - 20 uF, Acc: 3% + 10 digits, test freq.: 400 Hz.

  VB = Voltage Burden (Spannungsabfall)

  Made in Taiwan

• Net weight (2.2 lb = 1 kg)
• 0.311 kg / 0 lb 11 oz (0.685 lb)

• Literature/Schematics (1)
• -- Schematic

• Author
• Model page created by Rudolf Nemeth. See "Data change" for further contributors.

• Other Models

• Here you find 51 models, 43 with images and 18 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Beckman Instruments, Shasta, Shockley; Richmond (CA)