GyroMaster™ Evo

True Borehole Accuracy,
Without Compromise

In mineral exploration, azimuth accuracy is non-negotiable. When borehole surveys are unreliable, geological models and drilling decisions lose precision and confidence. Errors in azimuth and inclination can lead to costly misdirection and re-drilling.

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Conventional Gyros Slow Down Operations

Legacy survey tools require additional assemblies and separate runs, increasing the risk of handling errors and inconsistent results between crews.

This slows down core recovery and complicates QA/QC traceability, leaving data validation uncertain.

True North, Verified in a Single Run

GyroMaster™ Evo connects directly to the overshot, allowing core recovery and full borehole surveying in one operation. It aligns to true geographic north using Earth’s rotation, eliminating magnetic interference and producing verifiable, auditable results every time.

Accuracy, Efficiency, and Reliability in One Compact Design

True-North Alignment

Determines true azimuth by sensing the Earth’s rotation.
Unaffected by magnetic interference, ensuring verifiable results.

Compact Single-Module Tool

Lighter construction with integrated battery.
No threading or cables, reducing setup time and failure points.

High-Precision Measurements

Achieves 0.1% positional accuracy at total depth.
Delivers consistent results for confident decision-making.

Direct Overshot Connection

Allows surveys while coring.
Complete the borehole survey and recover core in a single run.

Operational Versatility

Slickline-deployable for Diamond Drilling and Reverse Circulation rigs.
Supports core retrieval (CR) and wedge orientation.

SmartCloud™ QA/QC Traceability

Run validation and quality data synchronized automatically.
Enables centralized oversight and structured QA/QC correlation.

True North, Proven Data

GyroMaster™ Evo uses north-seeking technology based on the Earth’s rotation to deliver accurate, magnetic-free azimuth data. This ensures true directional control with traceable performance at every stage of the operation.

Survey While You Core

Its direct-to-overshot configuration means the survey and core retrieval happen together. This approach saves valuable rig time and simplifies operations, delivering faster results without compromising data integrity.

New Roller Centralizers
for Smoother Surveys

Compact and lightweight, the new Roller Centralizers keep compatible gyro tools centered for smoother continuous and multishot surveys. Their spring-loaded rollers, durable technical materials, and replaceable wear components improve handling, simplify maintenance, and help reduce downtime in the field.

Simplified Design, Maximum Reliability

The compact, single-body tool minimizes points of failure. With an integrated rechargeable battery and no external components, it ensures stable performance even in demanding drilling environments.

Centralized QA/QC Oversight with SmartCloud™

GyroMaster™ Evo integrates seamlessly with SPT SmartCloud™, synchronizing run validation and quality control data in real time.

SmartCloud™ provides a secure, cloud-based platform that centralizes survey data, enabling project-level QA/QC tracking, traceability, and performance visualization.

With role-based access and an open API, it connects field operations with decision-making teams, ensuring complete transparency and faster data-driven insights.

Drill Rig Alignment

Directional Survey

Core Orientation

Structural Logging

SmartCloud™

Technical Specifications

Dimensions
Length	1107 mm (43.6”)
Outer Diameter	42 mm (1,65")
Weight	5.9 kg (13 lbs)

Performance
Azimuth Accuracy*	0,16°
DIP Accuracy*	0,05°
Typical Positional Accuracy**	0,1%
Azimuth Range	0° – 360°
Toolface Range*	0° – 360°
DIP Range	-90° – +90°
Survey Mode	Multishot - Continuos mode - All latitudes
Toolface Accuracy*	0,15°

* Accuracy quoted a 1σ.

** Well profile and centralization dependent .

Operational Environment
Depth Pressure	5,100 psi (35 MPa)
Operational Temperature	-30°C – +70°C (-22°F – +160°F)

Data
Graphic Generation	2D, 3D
Survey Report	At any interval
Communications	Bluetooth®/Wireline
Export Format	PDF, Excel, CSV, LAS, DXF
Export	SPT SmartCloud via WIFI or 4G LTE

Battery
Operating Time	> 8 hrs
Battery Type	Lithium Ion Rechargeable

Handheld Device
Battery	20 hrs (8580 mAh)
IP Rating	IP68, IP69K

Configurations by Application

Basic Kit – Continuous Mode

For fast and accurate borehole surveys in continuous mode. Slickline-ready, with a compact and easy-to-handle design

Core Retriever Kit with Overshot

Accurate gyro surveys and core retrieval in one diamond core drilling workflow.

Orientation Kit

For borehole orientation, wedge positioning, and directionally controlled drilling applications.

Accesories

Depth Counter

A real-time depth data synced to SPT instruments for consistent and reliable continuous Survey.

CalibraCheck™

Verify your tool’s calibration without downtime or transport

Contact Us

Make confident decisions with precise, field-proven data.

Discover how GyroMaster™ EVO Transform your Operations

Case studies

GyroMaster™ EvoCompact North-Seeking Gyro for Borehole Surveying