ProScale Simplex

The ProScale Simplex is a brilliantly simplified digital pocket scale with advanced features and an easy-to-use interface. The ProScale Simplex features a clear cover that also doubles as an expansion tray, a large LCD display, stainless steel weighing platform, protective pouch and parts counting mode.


  • Hinged clear cover
  • Removable expansion tray
  • Blue backlit LCD display
  • Protective pouch
  • Parts counting mode
  • Energy saving auto-off
  • Full capacity tare range
The ProScale Simplex Series is available in 2 models:
Simplex 300 & Simplex 500.
Model Capacity Accuracy
Simplex 300 300 g 0.01 g
Simplex 500 500 g 0.1 g
Included Accessories
2 x AAA Batteries
Protective Pouch
Tare Yes
Hold No
Count Yes
Auto-Off Yes, 60 sec.
Overload Indicator Yes
Calibration Yes
Power Up Segment Test No
Negative Values No
Technical Information
Units g, gn, ct, dwt, pcs
Power 2 x AAA batteries
Display Backlit LCD, Blue
Warranty Length 2 Years
Operating Temperature Optimum 15-30°C (59-86°F)
Scale Dimension 4.7″ x 2.5″ x 0.7″
120mm x 65mm x 17mm
Tray Dimension 2.95″ x 2.55″
75mm x 65mm
Scale Weight

Simplex 300

Mode Capacity Resolution
Grams 300.00 g 0.01 g
Grains 4630.2 gn 0.2 gn
Carats 1500.0 ct 0.1 ct
Pennyweights 192.90 dwt 0.01 dwt
Counting Pieces

Simplex 500

Mode Capacity Resolution
Grams 500.0 g 0.1 g
Grains 7716 gn 1 gn
Carats 2500.0 ct 0.5 ct
Pennyweights 321.0 0.1 dwt
Counting Pieces

Simplex Series (Simplex 300 & Simplex 500)

Calibrating Your ProScale Simplex