WaterMark Length Frequency Strip
This fish measuring ruler is used by field researchers, analysts, and observers at both national marine fisheries and Sea Grant programs. Made of non-reflective, non-glare plastic that is waterproof and weatherproof. Can be written on using a pen, pencil, or grease marker. Wipes clean for reuse. Graduated in centimeters on both sides. Dimensions: 4-1/16”W x 29-3/8”L.