CRACKMON TRACARD 3D StarterPak (12-Pack with Case) for Documenting and Trending Structural Cracks in Building Foundations (Crack Monitors Sold Separately) TRACARD 3D StarterPak includes (12) pre-printed blanks and compact polypropylene case (CRACK MONITORS SOLD SEPARATELY) Document structural cracks with Buildera&trade; CRACKMON crack monitors available separately 200%-magnified scale improves measurement transfer and legibility for scanning and reporting Ideal for building contractors, civil, geotechnical and structural engineers For engineering notebooks only; not for outdoor use or as a substitute for acrylic crack monitors