How Will This Micron Dimension Be Proved?

A micro feature is only as real as the method that measures it, and the method has to be settled before the process is chosen. Answer three questions and the planner names the instrument class, the reporting format and the question we would put back to you.

Feature size that has to be proved

Under 100 µmOrifice, narrow slot, thin web 100 µm to 500 µmSmall bore, fine step, tight radius 0.5 mm to 3 mmConventional probe territory Above 3 mmMicro detail on a larger body

What kind of dimension is it

Internal sizeBore, slot width, aperture diameter Form or positionFlatness, roundness, true position Surface conditionRoughness, edge condition, burr External sizeWidth, thickness, outside diameter

Can the feature tolerate probe contact

Contact is acceptableRigid feature, no delicate edge Contact is a riskThin web, sealing edge, soft surface

Awaiting inputs

Settle the method before the process

Choose a feature size, a dimension type and whether contact is acceptable. The planner returns an instrument class rather than a promise of achievable tolerance.

What the report would contain

One row per numbered dimension on a ballooned print

What we would ask you

Which dimensions carry function, and which of them need a report.

Agree the inspection method with us

Probe limits are taken from NIST micro-metrology work: tactile probing becomes impractical below roughly 500 µm, and NIST built a sub-100 µm fibre probe for that gap. Coordinate measuring machines are accepted and reverified under ISO 10360-2, which requires 105 measurements to fall inside the stated maximum permissible error. Instrument availability is confirmed per order.