A&D Weighing GP-20 Underhook GP-12Kg thru 40Kg

The A&D GP-20 Underhook is an optional accessory that enables below-balance weighing on compatible A&D GP Series precision balances. It allows users to suspend objects beneath the balance instead of placing them on the weighing pan, making it ideal for density determination, weighing oversized or irregularly shaped items, and specialized laboratory or industrial applications.

The GP-20 is designed for A&D GP Series balances with capacities from 12 kg through 40 kg, including compatible models such as GP-12K, GP-20K, GP-30K, GP-30KS, GP-32K, GP-32KS, and GP-40K. It is engineered specifically for these models to ensure secure installation and reliable below-balance weighing performance.

An underhook is beneficial when weighing items that are too large, oddly shaped, magnetic, or need to be submerged in a liquid. It is commonly used for specific gravity and density determination, suspended load measurements, and testing materials that cannot be accurately measured on a conventional weighing pan. This expands the versatility of your balance without compromising precision.

Yes. The GP-20 is specifically designed to support density measurement using Archimedes' Principle. By suspending a sample in water or another liquid, users can compare its weight in air and while immersed to calculate volume and density. This makes the accessory valuable for testing metals, concrete aggregates, ceramics, plastics, and other solid materials.

The A&D GP-20 is a genuine manufacturer accessory that extends the functionality of compatible GP Series balances without requiring additional weighing equipment. It offers a secure, reliable solution for below-balance weighing, density analysis, suspended load measurement, and research applications. For laboratories, construction material testing, manufacturing, and quality control, the GP-20 provides an easy way to perform specialized measurements while maintaining the accuracy and reliability of the A&D GP Series.