About This Feeler Gauge Set Measuring Range: With clear SAE metric dual marking, 32 blades straight feeler gauge measuring range: 0.0015-0.035inch (0.04-0.88mm); 16 blades offset filler gauge measuring range: 0.005-0.020inch (0.127-0.508mm) Wide Applications: The feeler gauges can measure gap, width and thickness accurately, perfect for engineers, designers, mechanics. The feeler gauge set is suitable for tappet clearances, spark plugs gaps, bearing clearances, piston ring gaps, guitar, bass, and other hard-to-reach places Dual-Marked Scale: With precise dual-marked scale, the wire gauge measuring tool ensures you always get the correct size for electrical, crafting, or industrial applications Wide Applications: This sheet metal gauge thickness tool is widely used in automotive repair, metal fabrication, welding, electrical work, jewelry-making, and crafting, suitable for measuring wire diameter, sheet metal thickness, and other precision materials You Will Get: 1x feeler gauge, 1x round thickness gauge for wire and non-ferrous metals, 1x round thickness gauge for sheet and plate of iron and steel, 1x sheet metal thickness gauge, 1x portable storage bag