Straight Waterproof Ferrous Substrate Probe | Scale 2 | 3' Cable | Elcometer 456 Manufacturer: Elcometer Part #: T456CF2SW Description: Designed to work with any of our Ferrous or Dual FNF Elcometer 456 Separate Gauges.For higher resolution & accuracy on thin coatings Scale 2 gauges can be switched to the Scale 1 mode measurement performance.Sealed for use under water at depth.Large diameter probe sleeve for use with diving gloves.Suitable on both flat and curved surfaces.Specifications: 3 foot cable Range: 0-200 mils (0-5mm) Accuracy: ±1-3% or ±1.0 mil (±20µm) Resolution: 0.1 mil: 0-50 mils; 1mil: 50-200 mils (1µm: 0-1mm; 10µm: 1-5mm) Minimum convex surface radius 4mm (0.16") Minimum concave surface radius 40mm (1.98") Minimum headroom 138mm (5.43") Minimum sample diameter F Mode: 8mm (0.32") Data Sheet