My Weigh Gempro

The My Weigh Gempro is an exceptionally accurate, high-precision gem scale. This scale uses professional quality components and true-division German HBM sensors to provide the most advanced features possible in a pocket scale for expert jewelers and ammo enthusiasts. The My Weigh Gempro also has a hinged protective hard cover, programmable auto-off feature and 0.005 ct resolution.

  • Programmable auto-off
  • Advanced counting feature
  • Last unity memory
  • Multiple calibration modes
  • Stable reading indicator
  • Level bubble
  • Adjustable feet
  • Hard case
  • Wind cover
  • Stainless steel tray
  • Power by battery or A/C adapter
The My Weigh Gempro Series has been discontinued.
The My Weigh Gempro is available in 3 models:
Gempro-250, Gempro-300 & Gempro-500.
Model Capacity Accuracy
Gempro-250 50 g
0.001 g
Gempro-300 60 g 0.001 g
Gempro-500 100 g
0.002 g
Included Accessories
Calibration Weight
AC Power Adapter
Expansion Bowl / Tray
Hard Protective Case
Hinged Wind Cover
Gem Tweezers
Tare Yes
Hold No
Count Yes
Auto-Off Yes, programmable
Calibration Yes
Overload Indicator Yes
Power Up Segment Test Yes
Negative Values Yes
Data Transmission Port No
Technical Information
Units g, oz, ozt, dwt, gn, ct
Power Rechargeable Battery
AC Power Adapter (DC 9V 650mA)
Display Backlit LCD, Red
Operating Temperature Optimum 10-30°C (50-86°F)
Scale Dimension 5.6″ x 3.8″ x 2.3″
142mm x 96mm x 60mm
Tray Dimension 2.75″ / 70mm Diameter
Scale Weight 7.9 oz / 224 g


Mode Capacity Resolution
Grams 50.000 g 0.001 g
Ounces 1.76365 oz 0.00005 oz
Pennyweights 32.150 dwt 0.001 dwt
Troy Ounces 1.60750 ozt 0.00005 ozt
Carats 250.000 ct
250.00 ct
0.005 ct
0.01 ct
Grains 771.72 gn 0.02 gn


Mode Capacity Resolution
Grams 100.000 g 0.002 g
Ounces 3.5273 oz 0.0001 oz
Pennyweights 19.290 dwt 0.001 dwt
Troy Ounces 3.2150 ozt 0.0001 ozt
Carats 500.00 ct 0.01 ct
Grains 1543.25 gn 0.05 gn


Mode Capacity Resolution
Grams 60.000 g 0.001 g
Ounces 2.11645 oz 0.00005 oz
Pennyweights 38.580 dwt 0.001 dwt
Troy Ounces 1.92900 ozt 0.00005 ozt
Carats 300.000 ct 0.005 ct
Grains 925.94 gn 0.02 gn

Gempro-250 & Gempro-500