
The Mettler Toledo® JE503C/A Carat Balance is a benchmark precision weighing instrument designed explicitly for diamond dealers, gemstone merchants, and jewelry manufacturers who need elite accuracy without unnecessary operational complexity. Serving as a foundational staple on diamond desks worldwide, this legal-for-trade scale handles a maximum capacity of 505 carats (101 grams) with a razor-sharp standard readability of 0.001 carats (0.1 mg). Its construction combines a rigid, solid metal base with a reinforced die-cast aluminum and ABS housing, providing high structural stability that prevents the unit from moving if accidentally bumped and isolates the internal Monobloc weighing cell from counter vibrations.
This balance delivers essential storefront efficiency through a simplified design focused on high performance and rapid response times, stabilizing weight readouts in just 2 seconds. Unlike the touchscreen JET variants, the JE503C/A features a crystal-clear, angled backlit LCD interface with large numbers that provide excellent visibility under any showroom lighting condition. To preserve strict measurement legality and save operational time, it includes a one-touch internal adjustment function, letting users test and recalibrate the scale instantly with internal weights at the push of a button. Rounding out its practical design, the front-facing level bubble and dual leveling feet allow operators to verify proper alignment at a quick glance before running delicate, high-value transactions.
Key Specifications & Features| Model | JE155DUG | JE503C/A | JE703C/A | JE1103C/A |
|---|---|---|---|---|
| Capacity x Readability | 210 x 0.1 ct 760 x 1 ct 42 g x 0.01 mg 152 g x 0.1 mg |
505 x 0.001 ct 100 g x 0.1 mg |
700 x 0.001 ct 140 g x 0.1 mg |
1103 x 0.001 ct 220 g x 0.1 mg |
| Legal for Trade | - | NTEP #12-105A3 - Measurement Canada AM-6081 | ||
| - | Class I | Class I | Class I | |
| 500 x 0.01 ct 100 g x 0.001 g |
700 x 0.01 ct 140 g x 0.001 g |
1100 x 0.01 ct 220 g x 0.001 g |
||
| Repeatability (Typical) | 0.02 mg | 0.08 mg | ||
| Minimum Weight (U=1%, k=2), typical | 4 mg | 0.016 g | ||
| Settling Time | 5 seconds | 3 seconds | ||
| Adjustment Type | Internal | |||
| User Interface | LCD Backlit Display | |||
| Balance Model (Carat/Gold) | Carat/Gold | Carat | Carat | Carat |
| Connectivity | PC, Printer, Secondary Display, Wireless Adapter | |||
| Weighing Pan Diameter | 80 mm | 90 mm | 90 mm | 90 mm |
| Dimensions (HxWxD) | 279 mm x 344 mm x 210 mm | |||
| Connectivity Ports | RS232 | |||