A person or device that determines the position or angle of an object by forming triangles with other known points.

त्रिकोणाकार

English Usage: The surveyor used a triangulator to measure the land accurately.

Hindi Usage: सर्वेक्षक ने भूमि को सटीकता से मापने के लिए त्रिकोणाकार का उपयोग किया।