Siegen 26 Blade Offset Feeler Gauge - Dual Marked. Imperial graduated 26 blade feeler gauge. Imperial Graduated 26 Blade Feeler Gauge. Imperial: 0.005", 0.006", 0.007", 0.008", 0.009", 0.010", 0.011", 0.012", 0.013", 0.014", 0.015", 0.016", 0.017", 0.018", 0.019", 0.020", 0.021", 0.022", 0.023", 0.024", 0.025", 0.026", 0.027", 0.028", 0.029", 0.030".
