Simple Duct Caliper

Simple Duct Caliper – Measure Round Ventilation Ducts with EaseQuickly and accurately measure round HVAC ducts with this easy-to-use duct caliper. Designed for convenience, especially when working overhead or in tight ceiling spaces, this tool helps you identify duct sizes without hassle.Measuring Range: ¼" to 18"Ideal for: HVAC technicians, installers, inspectors, and DIYersPerfect for on-site use: Lightweight and compact – great when you're up in the ceiling trying to determine duct sizeA must-have tool for anyone working with ventilation systems.