Keep your Acaia brewing scale perfectly accurate with the Acaia Calibration Weight. Built to strict F2 standards (+/- 0.0075g) and lab-verified by Acaia, it’s made from long-lasting stainless steel with the logo and weight laser-etched on the side. A custom EVA foam case is included for secure storage and decades of reliable use. Acaia Calibration Weight Features Precision Calibration – Built by Acaia to F2 standards (+/- 0.0075g) and lab verified, ensuring maximum precision when you calibrate. Laser Etched Weights – 100g or 500g, is laser etched into the weight so you never forget. Durable Stainless Steel – Constructed for long-lasting effectiveness. Carrying Case Included (500g only) – Keep your calibration weight safe when not in use. This Product Includes: 1 x Acaia Calibration Weight 1 x Carrying Case (500g only) The Specifics Materials Stainless Steel Weights 100, 500g Permissible Error +/- 0.0075g Dimensions 49 mm (W) x 33 mm (H)