Calibrate the frame
A printable calibration card establishes scale and lets the camera correct perspective before measurement begins.
ThreadSight / BoltLens
Real measurements. Real standards. Real confidence.
BoltLens is ThreadSight's native mobile validation project for calibrated fastener measurement. It combines a physical scale reference with deterministic computer vision before it ever attempts a standards match.
Calibrated • deterministic • native mobile
Calibration required/Test mode
Scale reference
Marker check active
The gate comes first
No launch claims before the evidence.
Calibrated camera capture with physical marker detection
M3–M10 metric measurement and six imperial reference sizes
A 50-image computer-vision regression harness
An accuracy report with explicit launch thresholds
Measurement protocol
The camera is not the measurement system. Calibration is.
Design principle
A photo alone is not enough to tell an M6 from a close imperial alternative. BoltLens starts with a known physical reference, then works forward from measured geometry.
Measure the geometry
Deterministic vision isolates the fastener and produces physical dimensions in millimetres—not a visual guess.
Validate before matching
Measured geometry is compared with reference standards only after the underlying accuracy checks hold up.
Boundaries are a feature
If confidence is insufficient, the result is not a guess.
Out of scope from an image alone
- Material grade, strength class, alloy, torque, and safety suitability are not inferred from appearance.
- When a thread needs more evidence, the workflow calls for a guided side-on image—not a forced classification.