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Product details
Snap Gauge and Gap Gauge are both types of limit gauges used in mechanical inspection to check dimensions of parts quickly and efficiently without requiring precise measurement. Here's a breakdown of each: 1. Snap Gauge: Purpose: Used to check the external dimensions (like the diameter or thickness) of a part. Structure: Has a "C" or "U"-shaped frame. Contains two pairs of jaws: Go jaw: Slightly larger, the part should pass through it. No-Go jaw: Slightly smaller, the part should not pass through. Use: You "snap" the part into the gauge. If it goes through the Go jaw and not through the No-Go, it's within tolerance. Common Use: Checking shaft diameters, rod thickness, etc. 2. Gap Gauge: Purpose: Used to check clearances or gaps between parts or inside features. Structure: Often flat, blade-like, or shaped for a specific application. May be a feeler-type or a fixed-thickness type. Use: Insert the gauge into the gap/space. If it fits, the gap is at least that big; if it doesn’t, the gap is smaller than the gauge. Common Use: Checking gaps in assemblies, spark plug gaps, valve clearances, etc.
