The Sokkia iM-55 PSBL (model 1023563-03) is a 5-second angular accuracy total station built for working surveyors, civil contractors, and site layout crews who demand consistent, repeatable positioning without overpaying for features they'll never use on the jobsite. This single-display configuration ships with an optical plummet and no Bluetooth — a deliberate, field-proven setup for crews that prioritize straightforward data collection, fast setup, and long-term instrument durability over wireless integration or dual-face displays.
Overview & Jobsite Applications
The iM-55 fits naturally into survey workflows where reliability and simplicity matter most. Whether you're running traverse loops across a municipal road project, setting control for a residential subdivision, or performing as-built verification on a commercial site, the iM-55 delivers the angular precision and EDM performance to get the job done. Its compact, balanced body reduces operator fatigue during extended setups, and its intuitive interface means crews spend less time navigating menus and more time collecting data.
Key Specifications
- Angular Accuracy: 5 seconds (5")
- Distance Measurement Range: Up to 4,000 m (single prism, good conditions)
- EDM Accuracy: ±(2mm + 2ppm)
- Display: Single-sided LCD display
- Plummet: Optical plummet
- Bluetooth: None (PSBL — no Bluetooth)
- Telescope Magnification: 30x
- Minimum Focus Distance: 1.3 m
- Waterproof / Dustproof Rating: IP66
- Operating Temperature: -20°C to +50°C
- Battery Life: Approx. 8 hours continuous operation
- Weight: Approx. 5.2 kg (instrument only)
Key Features
- 5-second angular accuracy — reliable for most construction layout and survey control work
- Single-display design keeps the instrument streamlined and cost-effective
- Optical plummet for precise centering over control points without electronic dependency
- IP66-rated housing stands up to rain, dust, and the daily abuse of active construction sites
- Intuitive Sokkia interface compatible with field crews already familiar with the iM series
- Compact, well-balanced body reduces tripod stress and operator fatigue
- Long battery life supports full-day operation on a single charge
- Compatible with standard data collectors and third-party field software
Job Applications
Road & Infrastructure Layout: Set horizontal and vertical control for curb, gutter, and pavement work with confidence. The iM-55's EDM range and 5-second accuracy are more than sufficient for typical DOT and municipal road projects.
Subdivision & Site Control: Establish and check primary control monuments, run traverse networks, and verify lot corners on residential and commercial developments where consistent angular performance is non-negotiable.
As-Built Surveys: Quickly measure existing conditions on active sites — building corners, utility features, pavement edges — and export data directly to your preferred CAD or GIS platform via data collector.
Construction Stakeout: Place grade stakes, building corners, and utility alignments with a no-fuss instrument that your crew can set up fast, trust all day, and break down without worry.
Compatible Accessories
- Sokkia SDR Data Collector
- Sokkia Replacement Battery Pack
- Aluminum Tripod for Total Stations
- Sokkia Reflective Prism & Pole Kit
- Total Station Carrying Case
- Sokkia iM-Series Interface Cable
Related Guides
- How to Choose Between 5-Second and 2-Second Total Stations
- Total Station Setup Best Practices for Construction Layout
- Sokkia iM Series Comparison: iM-55 vs iM-52
- Understanding IP Ratings for Jobsite Survey Equipment
Frequently Asked Questions
- What does PSBL mean on the Sokkia iM-55?
- PSBL stands for "no Bluetooth" in Sokkia's product designation system. The iM-55 PSBL (1023563-03) does not include built-in Bluetooth wireless communication. Data transfer is handled via cable connection to a compatible data collector or computer.
- Is the iM-55 accurate enough for boundary surveying?
- For many boundary workflows, yes — 5-second angular accuracy meets the precision requirements of most property surveys. However, always verify that the instrument meets the accuracy standards specified by your state licensing board or project specifications before selecting it for critical boundary work.
- Does the single-display configuration limit field productivity?
- Not significantly for most crews. A single-display setup means only one face of the instrument has a screen, which is standard for the vast majority of construction and topographic survey applications. Dual-display models are primarily beneficial when operators routinely work both faces of the instrument simultaneously.
- What data collectors are compatible with the Sokkia iM-55?
- The iM-55 is compatible with a wide range of industry-standard data collectors, including Sokkia's own SDR series, as well as popular third-party units running software such as Carlson SurvCE, Trimble Access (with proper configuration), and similar field survey applications. Contact Express Tools for compatibility guidance specific to your workflow.
