Armstrong Tools 25-Blade Master Feeler Gauge Set (70-819) | Brand New | USA-Made Professional Precision Thickness Gauge Standard Set

Measure valve clearances, spark plug gaps, and precision machinery tolerances with uncompromising accuracy. Upgrade your diagnostic drawer with this genuine Armstrong Tools 70-819 25-Blade Feeler Gauge Set.

When setting valve lash, setting ignition points, or checking mechanical clearances, exact measurements are critical. The Armstrong 70-819 25-Blade Master Feeler Gauge Set is engineered for industrial mechanics, toolmakers, and automotive engine builders who require precise gap measurements across a wide range of thicknesses.

This item is in 100% brand new, pristine condition. Manufactured in the USA from premium high-carbon tempered spring steel, each precision-ground blade features permanent, dual-marked etched sizes in both decimal inches and metric millimeters that will not wear off from oil exposure. Housed in a protective steel holder with a knurled lock-nut, this 25-blade set allows you to easily isolate a single blade or lock multiple blades together for custom thickness checks.

Key Features & Benefits

• Made in USA Quality: Crafted in the United States from heat-treated spring steel to ensure strict thickness tolerances and long-term durability.

• 25 Precision-Ground Blades: Comprehensive thickness range accommodates complex engine valve adjustments, bearing clearances, and mold setups.

• Dual Etched Size Markings: Each blade is permanently stamped with both decimal inch and millimeter equivalencies for fast, error-free reading.

• Knurled Steel Locking Nut: Secure thumb-screw locks desired blades firmly in place during testing or allows easy blade replacement.

• Protective Steel Case Handle: Sturdy steel housing protects delicate thin-gauge blades from bending, rusting, or snapping in your toolbox.

Technical Specifications

Complete Package Contents

• 1x Armstrong Tools 25-Blade Master Feeler Gauge Set (MPN: 70-819)