The New Definition of Accuracy

gyromaster™

The ultimate north-seeking gyro. Magnetism-immune, drift-free, and continuously capturing centimeter-level data, it delivers unmatched accuracy for precise downhole targeting.

The Hidden Risks of Borehole Deviation on Data Accuracy

Borehole deviation can compromise geological interpretation, increase operating costs, and waste valuable resources.
Magnetic and surface-referenced tools often prove unreliable in complex geological environments

Without Accurate Data, You’re Drilling in the Dark

Picture spending thousands on drilling, only to find your data was inaccurate. This can result in drilling barren zones or overlooking economically viable deposits, jeopardizing critical decisions

Real-Time Data. Confident Decisions. Maximum Efficiency.

GyroMaster™ leverages north-seeking gyroscopic technology, independent of magnetism, to deliver accurate borehole surveys at any angle or depth, including vertical. Data syncs to the cloud, enabling trusted decisions while maintaining a secure chain of custody

Proving the Accuracy of Your Downhole Survey Tool

With the scale of investment in mining projects, tool transparency should be an industry standard. Here are a few ways to confirm your tool performs as promised:

Carry out an in-run/out-run check

“Navibore™ technology incorporates a standard QC process: two independent borehole surveys to guarantee matching, reliable data

Manufacturer Verification

Require proof that the tool measures vertically to -89° in continuous mode, with in-run/out-run differences within 0.1% of depth on N-S/E-W axes

Surveyor Verification

Confirm accuracy through third-party surveyor triangulation

Run a Tool Check

Your tool must be proven to perform in the exact conditions it will operate in

For over 20 years, SPT has been a trusted authority in downhole accuracy. By relying on the Earth’s angular velocity rather than magnetism, GyroMaster™ offers versatile applications and is increasingly adopted in geology and major mining exploration projects

Knowing the True Precision of Your Gyro Survey Tool

Standard Deviation at 3σ (3 Sigma)

To accurately assess a gyro survey tool, SPT follows best practices by quoting measurements to 3 sigmas, providing 99.7% confidence that the stated values are correct. SPT achieves this high precision through continuous survey mode, whereas most tools record data points only every 30 meters.

Using proprietary Navibore™ solid-state gyro technology, SPT captures data points every centimeter to determine exact positions throughout the entire run.

Setting the Standard in the Industry

Measuring Trajectories for Various Tools

The table below compiles data and technical specifications from various tools, sourced from their manufacturers’ websites. The errors in final coordinates are clearly visible.

Using the GyroMaster™ north-seeking gyroscope for drill trajectory measurement minimizes these errors to near zero

GyroMaster™

Trusted Data, Right from the Beginning

Engineered for Extreme Conditions

Runs nonstop for 20 hours, enduring -35 °C to +70 °C and 10,000 psi with ease

Engineered for Every Operation

Compatible with all borehole types and geometries, from S-curves to deviated wells

Total Precision

Accurate azimuth and inclination tracking—seamless, even in full vertical

Automatic Data Validation

Generates certified reports from precise, centimeter-by-centimeter logging.

Magnetic Immunity

Unaffected by Magnetic Interference, Perfect for High-Interference Zones

Rapid Operation, Instant Data

150 m/min speed, uncompromised accuracy, with instant SmartCloud™ sync—anywhere, anytime

Your Data. Anytime. Anywhere

SPT SmartCloud™ instantly secures your data and delivers real-time access from anywhere.

With an intuitive interface, custom roles, and full traceability, it’s the simplest and safest way to manage operations without disruption

GyroMaster™

Technical Specifications

GYROMASTER™ WORKS WITH

Gamma SensorGyroGamma™

GyroGamma™

Single-run solution for gamma radiation and directional measurement

Core Sampe RetrievalCore Retriever™

Core Retriever™

Zero downtime—coring and borehole surveying at the same time

Depth MeasurementDepth Counter

Depth Counter

Real-time depth data synced with SPT instruments for reliable, continuous surveying

Calibration StandCalibraCheck™

CalibraCheck™

Check your tool’s calibration—no downtime, no transport needed.

Expert support, tailored solutions

Alternate goes beyond industry standards, delivering expert support and quality products with advanced tools, software, drilling muds, and parts—perfectly tailored for you

STOCKHOLM PRECISION TOOLS

SIAM MINERALS MUDS

Contact

CBD Niaga Sentul City No. 18 Blok C-1, Jl Rasuna Said, Bogor 16810 - Indonesia

+(62) 811 11 8 1608

inquiry@alternate.id

gyromaster™

The Hidden Risks of Borehole Deviation on Data Accuracy

Without Accurate Data, You’re Drilling in the Dark