Used 3M (Optical Comparators) for sale

3M is a renowned manufacturer in the field of optical comparators, which are precision measuring devices used to compare the dimensions of a part to its corresponding blueprint. 3M offers a range of analog optical comparators that are widely used in various industries for their accuracy and reliability. One of the main advantages of 3M optical comparators is their ability to provide high magnification, allowing for detailed inspection of parts. This ensures that any deviations from the blueprint dimensions can be easily detected. Additionally, these comparators offer excellent optical clarity, providing sharp and clear images for accurate measurements. Some examples of 3M optical comparators include models 1645, 701, and 740. The 1645 model is a vertical profile projector that offers a large workstage and precise measurements. The 701 unit is a horizontal benchtop comparator, ideal for small and medium-sized parts inspection. Lastly, the 740 model is a versatile floor-standing comparator with advanced features such as autofocus and digital readout. Overall, 3M optical comparators are known for their high-quality construction, precise measurements, and user-friendly interfaces. These comparators play a crucial role in ensuring the dimensional accuracy and quality control of manufactured parts.