Lang Tools 26 Blade Offset Feeler Gauge Set

The Lang Tools 26-Blade Offset Feeler Gauge (3275A) is a precision measuring instrument specifically designed for checking valve clearances in cramped, difficult-to-access engine bays. While standard straight feeler gauges often bend or kink when attempting to slide under a deeply recessed camshaft lobe, this set features 4-inch long blades with a 1-inch, 45-degree offset tip. This design allows you to slide the gauge into the clearance gap perfectly flat while holding the tool handle vertically, ensuring a highly accurate measurement.

Manufactured from high-carbon, tempered 1095 spring steel, the blades resist permanent deformation and slide smoothly between tight engine components. The set includes 26 distinct blades covering a measurement range from 0.005 to 0.030 inches, with every blade permanently etched with both standard (SAE) and metric (mm) sizes for quick identification. The blades are housed within a protective steel handle equipped with a knurled lock nut, allowing you to select the exact size you need and lock it securely in place so it does not fold backward during use.

Features:

• 45-Degree Offset Tip: The 1-inch angled tip provides superior access to tight valvetrains without bending the blade body.

• 26-Blade Range: Covers micro-measurements from 0.005" up to 0.030" (.127mm to .762mm) in incremental steps.

• Dual Markings: Each blade is permanently etched with both standard (inch) and metric (millimeter) equivalents for universal service manual compatibility.

• 1095 Spring Steel: Constructed from high-carbon tempered steel to resist kinking and ensure smooth insertion.

• Knurled Lock Nut: A secure thumb nut allows you to lock individual blades in the open position for better control.

What's in the Box:

• 1x Lang Tools 26-Blade Offset Feeler Gauge Set (3275A)

Application Notes:

• Use Case: An absolute necessity for checking intake and exhaust valve clearances during routine top-end maintenance on modern 4-stroke dirt bikes, ATVs, adventure motorcycles, and tight V-twin engines where straight access is blocked by the frame or radiator.

• Measurement Range:

  • .005, .006, .007, .008, .009, .010, .011, .012, .013, .014, .015, .016, .017, .018, .019, .020, .021, .022, .023, .024, .025, .026, .027, .028, .029, .030 inches.

• Why the Offset Matters:When working on a modern high-performance cylinder head (like a Honda CRF or KTM EXC), trying to force a straight feeler gauge under the cam lobes usually results in the blade bowing against the frame or engine casing. This bowing creates a spring-like resistance, completely ruining your tactile "feel" for the actual clearance gap. The offset tip on this Lang tool allows you to approach the gap from a functional angle, ensuring the blade remains perfectly flat between the cam and the bucket for a true reading.

   

• Tool Maintenance: Precision measuring tools require care. Because these blades are raw 1095 tempered spring steel, they are highly susceptible to rust if put away wet or handled with sweaty hands. After finishing a valve job, wipe the blades down with a clean rag lightly coated in WD-40 or a light machine oil before folding them back into the handle.

Part Number: 3275A