Carat Scale (PCS-50 & PCS-100)

A reliable portable carat scale that measures gemstones in weights of up to either 50.00 carats or 100.00 carats.

Presidium Carat Scale (PCS-50/PCS-100) is a compact scale that utilizes advanced circuitry design and surface-mount technology to weigh gemstones of either up to 50.0ct or 100.00ct, precisely and accurately, for long periods of continuous usage.

Each scale come with its corresponding weight reference of either 50.0ct or 100.00ct for calibration.

The PCS-50 is also available in the United States of America as the PCS-50 Legal For Trade (PCS-50LFT).

It is the first portable carat scale to be certified “Legal For Trade” by the U.S. National Conference of Weight and Measurement.

*meets requirements for commercial weighing and measuring equipment in the U.S. by the National Conference of Weights and Measures.



  • Weighing Capacity: 10g/50.00ct or 20g/100.00ct
  • Division Size: d=0.002g/0.01ct
  • Accuracy: Class II
  • Gram/carat/ozt/grain conversion
  • Weight references provided
  • Low voltage indicator
  • Auto power down function after 10 minutes from the last measurement
  • PCS-50LFT certified Legal for Trade in 34 states in the U.S.


  • Weighs gemstones up to 50.00ct or 100.00ct
  • Takes precise measurements to 0.002g/0.01ct
  • In-built start-up calibration to ensure accuracy every time you use it
  • PCS-50LFT is available for 34 pre-specified locations in the U.S.
  • Clear and visible digital display for ease of reading measurements
  • Simple and easy to use
  • Light and portable scale that can be used anywhere


Power & Battery

4 x AAA alkaline batteries

USB port to be used with USB cable and appropriate Presidium Universal USB Power Adaptor

Recommended Operating Conditions

Operating temperature: 18°C-27°C (65°F-80°F)

Storage temperature: 10°C- 50°C (50°F-122°F)

Dimensions & Weight

Length: 152mm (5.98 inches)

Width: 110mm (4.33 inches)

Height:41mm (1.61 inches)

Weight (without batteries): 210grams (7.40oz)

How It Works Video