3D measurement allows precise dimensional inspection of the whole steel structures and their single parts. Dimensional inspection of the large-size parts is carried out with the use of mobile coordinate measuring machines such as Leica Tracker AT 402 laser or three measuring arms of Romer Arm (7525/7530/7535) which enable very accurate measurement of the large-size parts up to several dozen meters in length. We also possess a stationary coordinate measuring machine (CMM) which is able to measure items with the dimensions of up to 700 x 600x 450 mm. In addition, we have a lot of traditional measuring tools at our disposal. We work in accordance with ASME Y14.5 and/or ISO 1101 depending on project requirements and our team consists of only qualified operators with extensive metrological experience.