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.

• Commercial Carat Capacity: Delivers a maximum capacity of 505 ct (101 g) with an analytical precision of 0.001 ct (0.1 mg), meeting strict NTEP legal-for-trade commercial standards (0.01 ct NTEP verification step).
• One-Touch Internal Calibration: Features built-in internal test weights, allowing showroom staff to instantly adjust and check balance calibration at a single key press without manual weight blocks.
• Backlit LCD Interface: Outfitted with a high-contrast, angled digital screen with large numeric readouts for mistake-free recording in diverse lighting conditions.
• Rapid Processing Speed: Offers a swift 2.0-second stabilization time to keep transactions moving smoothly during bulk gemstone sortings.
• Streamlined Leveling: Built with an upfront leveling bubble and adjustable feet located directly at the front of the unit for immediate checking and realignment.
• Versatile Unit Toggle: Pre-programmed with 16 alternative weight metrics (including ct, g, mg, dwt, ozt, and grains), allowing staff to alternate between two chosen primary units with a single click.
• Onboard Application Software: Includes 8 essential internal software profiles to calculate statistics, totalization, piece counting, and density determination for jewelry purity.
• Peripherals & Ports: Features a native RS232 interface out of the box to cleanly direct weight data to store computers, label printers, or secondary customer displays without extra setup software