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Measure length, width, diameter, gap, angle, position, edge distance, hole location, and profile features — with the accuracy to replace a hand gauge and the speed to check every part, not a sample of them.
A CMM or hand gauge gives you an accurate measurement of one part at a time — which is exactly the bottleneck at production volume. Vision-based dimensional measurement gives up a small amount of absolute accuracy in exchange for measuring every single part, inline, without touching it.
The accuracy that matters most here usually comes down to the lens, not the camera — a telecentric lens removes the perspective error that would otherwise make a part’s true dimension shift depending on exactly where it sits in the frame.
Each measurement type calls for a slightly different edge-detection or feature-fitting approach.
Straight-line distance between two defined edges of a part.
The perpendicular dimension across a part or feature.
Fit to a circular edge for holes, bosses, and cylindrical features.
Distance between two separate parts or edges, such as a panel fit gap.
Fit to two edges to calculate the included angle between them.
A feature’s coordinate relative to a datum or reference point.
Distance from a feature to the nearest edge of the part.
Position and pitch verification across multiple holes on a panel or plate.
Full contour comparison against a reference or CAD profile.
A quick sense of what typically drives the setup — the exact tools are always tuned during commissioning.
Telecentric lens with backlighting for a crisp silhouette and sub-pixel edge detection.
Circular edge fitting against a backlit or high-contrast image of the feature.
Sub-pixel edge detection between two independently identified features.
Multi-point edge fitting and coordinate transforms relative to a defined datum.
Point-by-point contour comparison against a stored reference or CAD profile.
A precision components manufacturer was gauging shaft diameter and length on a 1-in-20 sample basis, missing occasional out-of-tolerance parts between checks. A telecentric-lens station was added inline to measure diameter and length on every part as it left the grinding process.
Measurement accuracy
Parts measured, no sampling
Measurement cycle time
Send us the drawing and the tolerance that matters. Our application engineers will recommend the camera, lens, and lighting combination to measure it inline.