High-Precision Weighing in a Sleek Pocket Design

The Superior Balance® Ruby-300 Digital Scale combines precise measurements with a compact, protective design. Featuring a 300-gram maximum capacity with 0.01-gram readability, this portable scale is ideal for jewelry, coins, culinary ingredients, craft materials, collectibles, and other small lawful items.

A round stainless-steel platform provides a smooth and durable weighing surface, while the hinged protective lid helps shield the scale during storage and transportation. The backlit LCD display, straightforward digital controls, and battery-powered operation make the Ruby-300 convenient for use at home, at work, or while traveling.

Benefits of Use

The Superior Balance® Ruby-300 provides the detailed accuracy needed for measuring small items and materials. Its 0.01-gram readability allows for more precise results than standard household scales, while the 300-gram capacity accommodates a wide variety of everyday weighing tasks.

The stainless-steel platform is durable, easy to wipe clean, and suitable for direct weighing or use with a lightweight container. Its hinged lid protects the weighing surface and display when the scale is stored inside a drawer, bag, cabinet, or workstation.

The tare function allows the weight of a container or tray to be removed from the displayed measurement, making it easy to weigh only the contents placed inside.

Capacity and Precision

The Ruby-300 provides a maximum weighing capacity of 300 grams and displays measurements in precise 0.01-gram increments. Superior Balance classifies the model as a pocket scale that measures to one-hundredth of a gram.

This combination of capacity and precision makes the scale suitable for weighing:

• Jewelry and gemstones
• Coins and collectibles
• Cooking and baking ingredients
• Coffee, spices and seasonings
• Craft and hobby materials
• Other small lawful items

How to Use

Place the scale on a flat, stable, and level surface before turning it on.

Open the hinged protective lid, press the power button, and allow the display to return to zero. Place the item directly on the stainless-steel platform, or position a lightweight container on the platform and press the tare button to subtract its weight.

Add the item or material being measured and read the result on the backlit digital display.

For the most accurate results, keep the scale away from strong airflow, vibration, moisture, and uneven surfaces. Never place items on the weighing platform that exceed the scale’s stated maximum capacity.

Specifications

• Brand: Superior Balance®
• Model: Ruby-300
• Scale type: Digital pocket scale
• Maximum capacity: 300 g
• Readability: 0.01 g
• Platform shape: Round
• Platform material: Stainless steel
• Display: Backlit LCD
• Tare function: Yes
• Protective cover: Hinged lid
• Power source: AAA batteries
• Design: Compact and portable
• Warranty: Superior Balance® lifetime warranty

Superior Balance lists the Ruby-300 with a 300 g × 0.01 g capacity, round stainless-steel platform, backlit display, hinged lid, AAA-battery operation, and lifetime warranty.

What’s Included

• 1 Superior Balance® Ruby-300 Digital Scale
• Integrated hinged protective lid
• AAA batteries
• User instructions

Disclaimer

Use this scale only for lawful household, culinary, jewelry, collecting, hobby, or professional weighing applications. Place the scale on a stable, level surface and follow the manufacturer’s operating and calibration instructions.

Do not exceed the scale’s stated 300-gram maximum capacity, as overloading may damage the weighing sensor and affect future accuracy. Product appearance, packaging, batteries, measurement modes, and included components may vary slightly by production batch.