Test & Measurement

Instrument parts are the one category where dimensional stability beats initial accuracy. A bracket cut from ordinary rolled plate can hold ±0.005 mm on the CMM and then move as residual stress relaxes over weeks, which shows up as drift the customer will blame on the sensor. That is why MIC-6 cast plate and stress-relieved stock exist, and why a shop that quietly substitutes 6061-T6 to save a few dollars ruins an instrument program. Thermal behaviour is the second trap: a steel mount and an aluminium base on the same optical path move against each other by microns per degree, so material choice is a design decision the machinist has to respect rather than optimise. Volumes are small — often five to fifty — and every one of them is inspected, so the supplier has to be comfortable that measurement time exceeds cutting time.

ISO 9001

We understand instrument makers expect ISO 9001-grade material control — no undocumented grade substitution, because the substitution is the failure mode here.

ISO 10360

We report CMM results against the measurement method you specify; ISO 10360 describes how the machine itself is qualified, which we can state for the equipment used on your parts.

EN 10204 3.1

We support EN 10204 3.1 certificates on Invar 36 and cast plate, where the alloy chemistry is exactly what the thermal budget was calculated from.

We understand and support these requirements; certification and documentation scope is confirmed per order.