Compare two dry photographic test strips with a consistent surround. Two recessed comparison areas and a broad dark border reduce surrounding visual distractions. MEASURE FIRST Two dry strips up to 26×68 mm, maximum 0.6 mm thick. IN THE BOX 1 printed part in matte black PLA: comparison. No additional fasteners required. Subjects, camera, lights and accessories are not included. Printed and shipped on demand by Slant 3D. Shipping and taxes are calculated at checkout. USE Lay strips in the recesses under your normal print-viewing light. Compare matching image areas; this accessory does not calibrate viewing illumination or color. Dry indoor use. Keep away from heat; inspect and smooth any rough print edges before use. CAD geometry and local slicing checked. Physical fit, finish, stability and durability have not been tested. Images are renders of the actual CAD. Design: João Lutz / JoaoLutzFilm, developed with AI assistance. Original CAD; no third-party mesh used.