{"product_id":"pro-truing-stand-calibration-tool","title":"Pro truing stand calibration tool","description":"\u003cp\u003eThe reference gauge that calibrates the Unior Pro Truing Stand V2 (the matte-black-finish revision available from June 2022 forward). A flat steel reference plate that seats into the truing stand's caliper arms and lets the mechanic align the calipers to a known-zero centerline, restoring the symmetry the stand needs to read wheel dish and lateral true correctly.\u003c\/p\u003e\n\u003cp\u003eA truing stand is only as accurate as its calipers' centerline. Over hundreds of wheel builds, the calipers can drift off-center by a fraction of a millimeter; enough that a wheel built true to the stand reads as off-center on a frame, or a wheel built dished to the spec rides untrue. The calibration tool is the periodic-service item that resets the centerline: install the gauge, verify both calipers seat against it equally, adjust if not. A five-minute service that restores the stand's accuracy across the next dozens of wheel builds.\u003c\/p\u003e\n\u003ch2\u003eMatch the tool to your stand version\u003c\/h2\u003e\n\u003cp\u003eThe 1689.1 is specific to the \u003cstrong\u003ePro Truing Stand V2\u003c\/strong\u003e (black finish, June 2022 onward). The V1 stand (black and chrome finish, pre-2022) uses a different calibration tool; part number 629229. Verify your stand's revision before ordering: the V2 gauge will not fit the V1 caliper arms cleanly, and using the wrong tool gives a false-center reading.\u003c\/p\u003e\n\u003cp\u003eHow to tell the version: V1 has a chrome upper assembly above a black base; V2 is matte black throughout. The serial label on the stand base also identifies the revision.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFor: Unior Pro Truing Stand V2 (black finish, June 2022 onward)\u003c\/li\u003e\n\u003cli\u003eMaterial: machined steel reference plate\u003c\/li\u003e\n\u003cli\u003eFunction: zero-the-centerline calibration on truing-stand caliper arms\u003c\/li\u003e\n\u003cli\u003eArticle: 1689.1\u003c\/li\u003e\n\u003cli\u003eSKU: 629288\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Pro Truing Stand family is the wheel-building backbone of Unior's wheelbuilding category; the calibration tool is the workshop-discipline item that keeps the stand reading true year after year, the same way a torque wrench needs periodic calibration to stay within spec.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eCalibrate at the start of a wheel-build session, not after. A drifted calibration shows up as wheels that read true on the stand but ride untrue in the frame; by the time you discover the drift, you've built three wheels that need correction. Five minutes of calibration at the start of the session saves the rebuild time downstream.\u003c\/p\u003e\n\u003cp\u003eFor the broader picture on wheel-truing technique, including when the lateral and radial readings tell you something different about the wheel: \u003ca href=\"\/blogs\/tech-tips\/fix-disc-brake-rub\"\u003eFix disc brake rub →\u003c\/a\u003e (covers rotor truing, with the same caliper-alignment principles that apply to wheel truing).\u003c\/p\u003e","brand":"Unior USA","offers":[{"title":"Default Title","offer_id":45128291090476,"sku":"629288","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/files\/1689.1_629288_image_1024_ad721b85-89b7-4d91-bafa-75ff2c479fa0.jpg?v=1765986331","url":"https:\/\/uniorusa.com\/products\/pro-truing-stand-calibration-tool","provider":"Unior USA","version":"1.0","type":"link"}