Kohinoor Survey Instruments

India's Leading Survey Instruments 
Manufacturing & Supplier Company.

GM-55 Series (Topcon)

The Topcon GM-55 is part of the next-generation GM series total stations, engineered for high-performance field work while offering excellent value. It combines Topcon’s legendary build quality with modern features in a compact and lightweight design, making it ideal for daily surveying, construction layout, and general positioning tasks.
Built to withstand tough environments, the GM-55 offers water and dust resistance (IP66), a long-range EDM, and intuitive on-board software, enabling precise and efficient data capture on the go. With a powerful non-prism range of up to 500 m and reflector range of up to 4000 m, it’s a reliable tool for both close-range layout and long-distance survey lines.

Key Features of GM-55 Series (Topcon)

High-Performance EDM

Measure distances up to 500 m without a prism and up to 4000 m with a single prism, with sub-millimeter accuracy—ideal for diverse site conditions.

Advanced Angular Measurement

Equipped with 5-second angular accuracy, perfect for general construction layout, topo surveys, and alignment tasks.

Rugged, Field-Ready Build

Dust-tight and water-resistant to IP66 standards, ensuring durable performance in harsh site environments.

Compact & Lightweight

Designed for portability, the GM-55 is easy to transport and set up, reducing fatigue during long field sessions.

Long Battery Life

Up to 28 hours of operation on a single battery charge, supporting full-day use without interruption.

On-board Software

User-friendly, intuitive interface with built-in programs for measurement, stakeout, coordinate geometry, and more—no external controller needed for basic operations.

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