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Inspection Services


Contact DTB with your inspection and testing requirements.

NDI — Non-Destructive Inspection

DTB values efficiency. And we will efficiently structure your product testing to save time and money. With our experienced and results-oriented methodologies, we have saved clients in all industries costly and extensive troubleshooting and research efforts. Non-destructive inspections can be undertaken in our NDI inspection and NDT testing facility. Our experts can perform non-destructive inspection on your part to confirm continued conformance to technical data by using liquid penetrant and magnetic particle NDI techniques.

NDI Using Liquid Penetrant & Magnetic Particle Techniques

NDI Using Liquid Penetrant Techniques

DTB has the capability of performing liquid penetrant non destructive inspections to procedures based on ASTM E-1417. We have certified level III non destructive inspection technicians qualified in accordance with ASNT SNT-TC1A and NAS 410.

NDI Using Magnetic Particle Techniques

DTB has the capacity to perform non destructive inspection on parts comprised of magnetic materials up to 9.5 feet in length. We also have portable magnetic particle non destructive inspection equipment. The magnetic particle inspections are performed IAW procedures based upon ASTM E-1444. We have certified level III non destructive inspection technicians qualified in accordance with ASNT SNT-TC1A and NAS 410.

reverse-engineer-part-scanAt Dayton T. Brown, Inc. we can scan your products critical profiles using the latest measurement technology.

We can confirm compliance with your tolerances and display the results with color coded printouts including: nominal part shape, tolerance bands, actual shape and deviations.

We can accommodate your CAD files to define nominal part shape or develop one from your supplied drawings.

first-article-01DTB routinely performs First Article Testing (FAT) for testing for military and commercial suppliers. A complete FAT begins with a review of the technical data package supplied and a visual examination of the part.

Our dimensional Inspection plan starts with a complete review of the drawing datum structure and features. The appropriate dimensional equipment is selected depending on part tolerances, accessibility and measurement efficiency.

Upon completion of the inspection the actual values are recorded on the data sheet and reviewed by engineering. The part can undergo a Non Destructive Inspection, hardness and or a destructive metallurgical analysis.

Our experienced staff of technicians and engineers can perform dimensional inspection on your part/product to assure the part’s/product’s compliance with its design specifications by assessing the geometric characteristics that can affect both the reliability and functionality of the part/product, within the desired level of accuracy and in accordance with the guidelines of ASME Y14.5.We have temperature controlled 1000 sq. ft. dimensional lab equipped with three Coordinate Measuring Machines (Leitz, Mitutoyo and Starett), a Computer controlled Optical Comparator, and a surface roughness measuring stationOur conventional open setup measuring equipment feature three large surface plates, height gages, calipers, micrometers, over 250 thread gages and over 1000 plug gages.

inspection-01Dimensional Lab Equipment and Capabilities Leitz CMM — programmable, allowing automatic measurements of multiple part samples. An analog probe allows continuous scanning in all three axes simultaneously. Its Quindos software provides geometric tolerancing calculations along with gear and spline measurement capability.

The Leitz Model 12 10 6 Coordinate Measuring Machine is of laboratory grade with accuracies to 0.002mm. It has a measurement volume of 47 x 39 x 24 inches and a maximum weight capacity of 3,000 pounds. The Leitz CMM is installed in DTB’s temperature controlled dimensional lab on an 8 x 6 x 4 foot concrete slab designed to minimize externally induced vibrations.


Mitutoyo CMM — Model Crysta-Apex C 7106, is a direct computer-controlled high-speed programmable CMM with a measuring range of 27 in x 39 in x 23 in and an accuracy ± .0002”. Capabilities include 2D and 3D measurement analysis, GD and T evaluations, form, contour and inspection to CAD models. The CMM is fitted with a motorized Renishaw touch trigger probe.


Starrett CMM — allows 2D calculations per GD and T requirements.


Surface Roughness Measurement — The dimensional lab contains a (Mahr-Federal) digitally filtered, non-skidded probe surface roughness measuring station. It is capable of surface roughness analysis per ASME B46.1.


Optical Comparator — We have a programmable (Optical Gauging Products) optical Comparator with auto-edge detection and capabilities of 10X, 20X and 50X magnifications. Capabilities include: 2D measurement analysis and GD and T evaluations. The comparator can be run manually or under direct computer control using either surface or profile illumination.