--- product_id: 43252068 title: "CRACKMON 4020A Concrete Crack Monitors (50-Pack), Heavy-Duty Crack Gauge for Civil Infrastructure, Foundations, Buildings and Historic Preservation, Bulk Packaged" brand: "buildera" price: "S$36" currency: SGD in_stock: false url: https://www.desertcart.sg/products/43252068-crackmon-4020a-concrete-crack-monitors-50-pack-heavy-duty-crack store_origin: SG region: Singapore --- # ±20mm horizontal & ±10mm vertical precision Unique serial ID for forensic traceability 50% thicker polymer for extreme durability CRACKMON 4020A Concrete Crack Monitors (50-Pack), Heavy-Duty Crack Gauge for Civil Infrastructure, Foundations, Buildings and Historic Preservation, Bulk Packaged **Brand:** buildera **Price:** S$36 **Availability:** ❌ Out of Stock ## Summary > 🛠️ Crack the code of structural integrity with CRACKMON 4020A – precision meets durability! ## Quick Answers - **What is this?** CRACKMON 4020A Concrete Crack Monitors (50-Pack), Heavy-Duty Crack Gauge for Civil Infrastructure, Foundations, Buildings and Historic Preservation, Bulk Packaged by buildera - **How much does it cost?** S$36 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/43252068-crackmon-4020a-concrete-crack-monitors-50-pack-heavy-duty-crack) ## Best For - buildera enthusiasts ## Why This Product - Trusted buildera brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure:** 50% thicker proprietary polymer withstands harsh jobsite conditions for reliable long-term use. - • **Bulk Pack Efficiency:** 50-pack bulk packaging designed for high-volume civil, structural, and geotechnical projects. - • **Smart & User-Friendly:** Integrated GeoQR tech offers instant access to instructions and hassle-free reordering via smartphone. - • **Precision You Can Trust:** Dual-axis ±20mm horizontal & ±10mm vertical measurement ensures pinpoint crack monitoring accuracy. - • **Traceability at Its Finest:** Each unit’s unique serial ID guarantees unmatched forensic and engineering documentation. ## Overview The CRACKMON 4020A is a heavy-duty, patent-pending crack monitor designed for precise 2D displacement measurement in concrete and structural materials. Manufactured in the USA with a 50% thicker polymer for enhanced durability, it features unique serial IDs for forensic traceability and integrated GeoQR technology for easy access to instructions and reordering. Sold in a bulk 50-pack, it’s ideal for civil, structural, and geotechnical professionals requiring reliable, high-volume crack monitoring solutions. ## Description FROM THE MANUFACTURERThe new Buildera CRACKMON 4020A is a heavy-duty, patent-pending, structural crack monitor to measure displacement in foundations, concrete, stucco, masonry, plaster, wood and steel structures. Ideal for restoration, seismic retrofitting, or forensic analysis of differential settlement, the CRACKMON 4020A is an indispensable tool for structural, civil and geotechnical engineers, building contractors, trades professionals, commercial property owners, building inspectors, or homeowners. Buildera precision manufactures each CRACKMON 4020A in the USA using premium-quality materials and workmanship for superior engineering accuracy and traceability.FEATURES AND BENEFITS Extreme durability—50% thicker proprietary polymer compared to classic model (4.5 mm vs 3 mm) New 2D-plus polar magnitude and X-Y displacement measurement grid with precision TickPoints improve measurement accuracy Vibrant rich-black and red UV-cured printing on opaque white background doubles the contrast, enhancing legibility in a wide range of lighting conditions Unique serial IDs provide unprecedented engineering traceability in a crack monitor—essential in forensic studies and documentation of client reports Integrated GeoQR technology simplifies access to online instructions and easy re-ordering using a smartphone Flexible mounting arrangement optimized for #8(M4) or #6(M3.5) tamper-resistant fasteners and epoxy (sold separately) Available tamper-resistant Torx Plus stainless-steel screws and anchors made in USA Optional impact-absorbing thermoplastic drilling guide aligns hole centers while hammer-drilling concreteWHAT'S INCLUDED(50) CRACKMON 4020A Crack Monitors with installation instructions and crack tracking sheetRECOMMENDED ACCESSORIES BUILDERA STRUPOXY UPC 0816291010099 ## Features - Box of (50) new CRACKMON 4020A heavy-duty crack monitors, instructions, and crack progress chart - Manufacturer-direct bulk package for high-volume use in civil, structural, geotechnical engineering and surveying - Precision caliper measurement range of ±20 mm (±0.79") horizontal and ±10 mm (±0.38") vertical - Unique CRACKMON serial ID for engineering and forensic traceability - Designed and made in the USA. Epoxy and fasteners sold separately. Not for resale. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06Y1D7ZBM | | Batteries Included? | No | | Batteries Required? | No | | Color | White / Transparent | | Compatible Fastener Range | #6 - #8 SS SMS. Fasteners not included. | | Date First Available | April 4, 2017 | | Included Components | Installation instructions and crack progress chart | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 50 | | Item Weight | 1.2 ounces | | Manufacturer | BUILDERA | | Material | Heavy-duty acrylic | | Measurement System | Metric | | Number Of Pieces | 50 | | Part Number | UPC 816291010198 | EAN 0816291010198 | | Product Dimensions | 6.02 x 1.22 x 0.35 inches | ## Images ![CRACKMON 4020A Concrete Crack Monitors (50-Pack), Heavy-Duty Crack Gauge for Civil Infrastructure, Foundations, Buildings and Historic Preservation, Bulk Packaged - Image 1](https://m.media-amazon.com/images/I/61Wg27jz33L.jpg) ![CRACKMON 4020A Concrete Crack Monitors (50-Pack), Heavy-Duty Crack Gauge for Civil Infrastructure, Foundations, Buildings and Historic Preservation, Bulk Packaged - Image 2](https://m.media-amazon.com/images/I/71BNGd1Lj2L.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/43252068-crackmon-4020a-concrete-crack-monitors-50-pack-heavy-duty-crack](https://www.desertcart.sg/products/43252068-crackmon-4020a-concrete-crack-monitors-50-pack-heavy-duty-crack) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-17*