Calibration and Test Box for Normal Resistivities, SP, and Induced Polarization “17-202-054, Disposable, molded PVC centralizer for 40 mm diameter probe, 95mm (3.7″) diameter boreholes” has been added to your cart. View cart $790.00 Calibration and Test Box for Normal Resistivities, SP, and Induced Polarization quantity Add to cart SKU: 17-202-096 Categories: All Products, Logging Accessories Description Additional information Description 17-202-096 Calibration and Test Box for Normal Resistivities, SP, and Induced Polarization Additional information Weight 8 lbs Related products 17-202-295, Atom Series Centralizer Collar Set $141.00 Add to cart 17-202-291, 127 mm (5 inch) Atom Centralizer Blade $32.00 Add to cart 17-202-290, 102 mm (4 inch) Atom Centralizer Blade $26.00 Add to cart 17-202-294, 305 mm (12 inch) Atom Centralizer Blade $65.00 Add to cart