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The SPI 40-246-1 is an optical comparator chart and reticle designed for use with 10x magnification comparator systems. The reticle measures 1.375 inches in overall diameter and fits into the eyepiece or stage of a compatible optical comparator. It provides a reference grid or profile overlay that technicians and quality control inspectors use to measure, verify, or compare part geometry against a known standard. This type of reticle is a standard consumable and replacement component in precision measurement and inspection workflows.
This chart and reticle is suited for use in machine shops, manufacturing facilities, and quality inspection labs where optical comparators are used for dimensional verification of machined parts, tooling, and components. It is intended for systems that operate at 10x magnification. Machinists, QC technicians, and metrology professionals are the typical end users. It is a direct-fit accessory requiring no modification for compatible comparator setups.
Designed for use with optical comparator systems operating at 10x magnification that accept a 1.375-inch diameter reticle or chart insert.
Installation is performed by metrology or QC technicians during routine maintenance or reticle replacement. Power down or disengage the optical comparator illumination source before handling the reticle to avoid glare or heat exposure. Handle the reticle only by its edges to prevent contamination of the optical surface. Follow the comparator manufacturer guidelines for seating and securing the reticle within the eyepiece or stage mount.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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