Survey Lath, 5/16" x 1-1/2" x 18" – Bundle of 50 Create compact field markers for surveying, construction layout and general site identification with this smooth-sawn Douglas Fir survey lath. The shorter 18-inch length is ideal for temporary and low-profile marking applications while still providing a convenient surface for writing, painting or attaching flagging. Key Features 5/16" x 1-1/2" x 18" smooth-sawn wood survey lath. Plain wood surface provides room for writing, painting or attaching flagging. Compact 18-inch length is ideal for temporary survey and construction marking. Made from quality Douglas Fir sourced from the Pacific Northwest and manufactured in Central California .