{"product_id":"stewmac-understring-radius-gauge-tool-set-of-9-extra-wide-bass-setup","title":"StewMac Understring Radius Gauge Tool Set of 9 - Extra-Wide Bass Setup","description":"\u003cp\u003eIn this review the StewMac Understring Radius Gauge set is evaluated as a practical toolkit for bass players and techs who need accurate saddle and pickup alignment. The single biggest reason to buy is its combination of an easy-to-read low profile and a matched top-and-bottom curvature that lets a user measure fretboard radius with strings on and then transfer that curve to bridge saddles for faster, repeatable setups. The review focuses on how the set fits bass work and why the extra-wide span matters for wider string spreads.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet of 9 radii:\u003c\/strong\u003e Includes 7-1\/4in, 9-1\/2in, 10in, 12in, 14in, 15in, 16in, 17in and 20in to match vintage and modern fretboard arcs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderstring low profile:\u003c\/strong\u003e Slim shape lets you read fretboard radius with the strings on, so measurements can be done without removing strings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop and bottom matching arcs:\u003c\/strong\u003e Bottom curvature determines the fretboard radius and the matching top curvature becomes a direct reference for setting saddle heights.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra-wide span:\u003c\/strong\u003e Covers string spreads up to 3-3\/4in (95.25mm), making it suitable for most 4-string and 5-string basses and many 6-string basses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable steel construction:\u003c\/strong\u003e Steel gauges hold their radiused shape for repeated use in workshop and stage environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe set is aimed at bass players, luthiers and techs who perform routine setups and want a simple, reliable way to match saddle heights to the fretboard arc without complex jigs. It is particularly useful for shops that service 4-string and 5-string basses and for players who prefer to check radius with the strings installed.\u003c\/p\u003e\n\u003cp\u003ePlayers who only need a single radius or who prefer digital profiling tools may not need the full nine-piece set. Also, those working exclusively on narrow-spread electric guitars with string spreads under the stated span could use a smaller or different gauge solution.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFast and accurate transfer of fretboard radius to bridge saddles for improved playability.\u003c\/li\u003e\n\u003cli\u003eLow profile design allows radius reading with strings on, saving time and avoiding restringing.\u003c\/li\u003e\n\u003cli\u003eExtra-wide width accommodates wide string spreads common on basses and some extended-range guitars.\u003c\/li\u003e\n\u003cli\u003eSteel construction is robust and resists wear from repeated use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe full nine-piece set may be more than needed for someone who only uses one or two radii.\u003c\/li\u003e\n\u003cli\u003eThe gauges are physical tools only and do not replace digital measuring for complex profiling work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eStewMac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of gauges\u003c\/td\u003e\n\u003ctd\u003e9 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded radii\u003c\/td\u003e\n\u003ctd\u003e7-1\/4in, 9-1\/2in, 10in, 12in, 14in, 15in, 16in, 17in, 20in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum string spread\u003c\/td\u003e\n\u003ctd\u003e3-3\/4in (95.25mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eDurable steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe StewMac Understring Radius Gauge set is a practical, high-value tool for bass setup work where fast, repeatable saddle height matching matters. It is especially worthwhile for techs and players who service a variety of bass radii and want the convenience of measuring with strings on; those with minimal radius needs or who prefer digital profiling may not need the full set.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan these gauges be used with strings on?\u003c\/strong\u003e\u003cbr\u003eYes, the low profile and slim shape are specifically designed to let you read the fretboard radius with the strings installed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the set fit 5-string and 6-string basses?\u003c\/strong\u003e\u003cbr\u003eThe extra-wide gauges span up to 3-3\/4in (95.25mm), making them ideal for 4-string and 5-string basses and suitable for many 6-string basses.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the construction material?\u003c\/strong\u003e\u003cbr\u003eThe gauges are made of durable steel so they maintain their radiused arcs through repeated use.\u003c\/p\u003e","brand":"StewMac","offers":[{"title":"Default Title","offer_id":48263897809115,"sku":"B01HUCLN92","price":55.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81bRjikoO_L._AC_SL1500.jpg?v=1778228122","url":"https:\/\/gearmusthave.com\/products\/stewmac-understring-radius-gauge-tool-set-of-9-extra-wide-bass-setup","provider":"GearMustHave","version":"1.0","type":"link"}