Moore & Wright MAW1112 Safe & Sure Feeler Gauge 12in The Moore & Wright Safe & Sure Feeler Gauge with hardened tempered and polished blades. The nominal thickness is marked on each blade. Ideal for general workshop use. The 1112 Safe & Sure Feeler Gauge Set has the following specification: Length: 12in Width: 0.5in Locking Screw: No No. of Blades: 10