DigiWeigh Digital Pocket Scale For Weighing Gold, Gem Stones & Precious Metals. This is a new digital pocket scale. Has a 250 gram capacity and is accurate to 0.1 gram. Excellent accuracy and reliability. Lightweight with auto calibration and full tare capacity. Auto off feature. It weighs in grams, ounces, pennyweight and troy ounces. It has a protective flip up cover 4 AAA batteries are included. Calibration weight is NOT included. It measures approximately 5" x 3" x 7/8" (127 x 76 x 22 mm).