The Torbal Model DRX-3 meets or exceeds all the specifications and tolerances for a Class III prescription balance as defined in NIST Handbook 44.

Torsion Bands - A cobalt, chromium, nickel alloy with constant torsional properties over a wide temperature range. This alloy also offers extra strength and corrosion resistance.

Deep Plexiglass Lid - Extra height permits weighing with the lid down. Plexiglass offers strength with good visibility of pan and index.

Stainless Steel Pans - Highly polished and corrosion resistant.

Sealed Case - One piece metal case has overlapping plate glass top. Complete protection against dust and chemical seepage.

Leveling Screws - Non-binding; under the case, so chemicals cannot drop into the threads and cause corrosion.