Carat

AWS Gemini 20 Precision Milligram Scale from American Weigh Scales is a High Precision Digital Balance Weighs up to 20g in 0.001g increments 4 Weighing Modes Gram, Ounce, Carat, Grain.  Includes Carrying Case, Tweezers & Calibration Weight.  Great for weighing powder in the lab or for reloading, precious gems, diamonds or gold, Jewelry or coins.

Tree HRB-20001 High Capacity Bench Counting Scale Precision Balance 20kg x 0.1g Features a large 7.8" x 8.5" stainless platform and multiple weighing units, an LCD display with selectable backlight and auto-off, RS-232 computer interface connectivity and parts counting mode.  This balance is powered by the included AC adapter or rechargeable batteries.

Tree HRB 623 Magnetic Force Milligram Balance from LW Measurements has a capacity of 620 g and resolution of 1 mg. It offers glass draft shield and RS232 and USB ports for computer connectivity.

The Tree HRB 224 Magnetic Force Analytical Laboratory Balance Weigh Scale is a 220 gram x 0.1 milligram balance that uses magnetic force restoration technology.

The PS 450 3Y from Radwag is a high precision professional laboratory milligram balance scale has many functions; Check Weighing, Dosing, Air Density, Parts Counting, Percentage Formulation, Under Hook Weighing, Density Determination and more.

Tree MS-600 digital pocket scale features a 600 gram maximum weighing capacity and 0.1 gram minimum readability. Weighs in grams, carats, ounces, and pennyweight.

The Radwag AS 220.R2 professional laboratory analytical balance scale weigh up to 220 grams with a precision of 0.1 milligram. 

Tree CCT-100 Mini Digital Pocket Jewelry Scale from LW Measurements 100g x 0.01g 

The Radwag AS 310.R2 Analytical Balance weighs up to 310 grams with a minimum resolution of 0.1 milligram. Features RS232 and WiFi connectivity.

This is the RADWAG PS 1000.R2 Precision Balance Lab Scale 1000g x 1mg AC USB RS232 WiFi

Maximum capacity [Max]: 1000g
Readability [d]: 0.001g

The Tree HRB-S 1002 TL Stainless Top Loader Scale from LW measurements is a compact bench style weigh scale with a stainless steel finish. It weighs up to 1000g with a minimum readability of 0.01g Features USB connectivity and AC power adapter option.

The AS 82/220.X2 Plus Series from RADWAG are Analytical laboratory balances with a spacious weighing chamber for the measurement of small masses.