Wet Film Thickness Elcometer 3238 Long Edge Wet Film Combs (Stainless Steel) These stainless steel combs are wire eroded to provide an accuracy of ± 2.5μm (0.01mil) and are supplied with either Metric or Imperial measurements. Each comb has 24 measurement steps (teeth) providing a more accurate wet film thickness value. STANDARDS: ASTM D 4414-A, AS/NZS 1580.107.3, BS 3900-C5-7B, ISO 2808-1A, ISO 2808-7B, JIS K 5600-1-7, NF T30-125, US Navy PPI 63101-000, US Navy NSI 009-32 Technical Specification Metric Combs Part Number Imperial Combs Measurement Steps Certificate Part Number Measurement Steps Certificate ±5% of marked value or 3μm (0.12mil) whichever is the greater ○ Optional Calibration Certificate available. © 2015 Elcometer Limited. Elcometer is a registered trademark of Elcometer Limited. All other trademarks acknowledged. Due to our policy of continuous improvement, Elcometer Limited reserves the right to change specificati