Description The precision thickness gauge tool features a wedge shaped gap tester design, making it a reliable flatness measuring tool for engineering and house inspection tasks. Made from durable plastic calipers, it ensures consistent taper gauge accuracy for fire door inspection, achieving exact thickness calibration in mechanical applications. Features -Color:Transparent -Material:Plastic -Size:11.00X3.50X2.20cm/4.32X1.38X0.86in -Precision measurement: easily detect micro gaps from 0.05 mm to 3 mm using this precision thickness gauge tool, ensuring assembly accuracy for engineering and construction applications -Durable material: crafted from advanced plastic, this wedge shaped gap tester offers high resistance to wear and deformation, making it an ideal choice for long term house engineering gauge needs -Versatile tool: the 25in 1 flatness measuring tool provides a comprehensive solution for all thickness measurement gauge requirements in automotive, industrial, and fire door inspection -Portable design: compact size allows the portable gap tester for doors to be conveniently carried and used anywhere, enhancing work efficiency during inspection or maintenance tasks -Essential for professionals: this plastic caliper and feeler gauge combo is a must have for engineers, mechanics, and designers, enabling fast, reliable fire door gap testing and precise measurementsPackage list: 1 x plastic feeler gauge