![]() Optical Test and Calibration Optical Test and Calibration (OTC) is a company that specializes in infrared light measurements for fiber optic test equipment. | ![]() Wilmington Instrument Wilmington Instrument Company is a calibration laboratory and full-service distributor of process and test instrumentation. | Shimadzu Shimadzu (株式会社島津製作所) is a company that manufactures analytical measuring instruments, medical imaging systems, vacuum industry machinery, hydraulic equipment, and optical devices. | ![]() TAC Technical Instrument TAC Technical Instrument (also known as TACTIC) is a company that manufactures ultrasonic testing (UT) equipment for metal tubes, pipes, and bar stocks. | ||
Founding Date | Founding Date 1989 | Founding Date 1944 | Founding Date 1875 | Founding Date 1962 | Founding Date 1993 |
Type | Type Private | Type Private | Type Public | Type Subsidiary | Type Private |
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Locations | Locations Bradford, GB HQ | Locations Los Angeles, US HQ Benicia, US Wilmington, US | Locations Kyoto, JP HQ Sydney, AU Korneuburg, AT Wemmel, BE Sarajevo, BA Porto Alegre, BR Rio De Janeiro, BR see more | Locations Feasterville-Trevose, US HQ Elmsford, US | Locations Flower Mound, US HQ |
Employees | Employees 24 | Employees 8 | Employees 14,481 | Employees 2 | Employees 432% increase |

Wilmington Instrument Company is a calibration laboratory and full-service distributor of process and test instrumentation.
View companyShimadzu (株式会社島津製作所) is a company that manufactures analytical measuring instruments, medical imaging systems, vacuum industry machinery, hydraulic equipment, and optical devices.
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TAC Technical Instrument (also known as TACTIC) is a company that manufactures ultrasonic testing (UT) equipment for metal tubes, pipes, and bar stocks.
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ThermoTek is a manufacturer of medical devices.
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