- TestMart, dba GSAMart, is the #1 Test Equipment Reseller to the U.S. Government. - Holds the GSA Schedule 66 (Contract #GS24F0066M) and partners with over 100 manufacturers. - Carries over 200,000 SKUs that are GSA-compliant. - Over 15 years experience working with the U.S. government contractors, buyers, and end-users.