The U.S. Army TMDE Activity requires the purchase of three manual mass comparators as life-cycle replacements for inoperable units. The equipment must be delivered to Building 5435, Fowler Road, Redstone Arsenal, Alabama. Specific models or equivalents are needed with maximum measurement capabilities of 6.1g, 26.1g, and 111g, each with specified readability. No budget amount or submission timeline is provided in the description. The comparators must support additional measurements for the Army Physical Standards Labs mission.