King Tester CORP
At a glance
EmployeesNot reported
In business since1936
HeadquartersPhoenixville, PA
SAM.gov UEIESG9MCKM1QA5
King Tester manufactures hardness testing equipment, including Brinell testers, Rockwell testers, test blocks, and scopes for measuring material hardness. The company serves manufacturers and metal processors, including foundries, heat treating facilities, and forging operations. The text names ISO 17025 accreditation and NIST traceability as certifications the company holds.
Summarized from the company’s own website
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| King Tester CORP | Phoenixville | PA | — | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.


