APKPure Appを使用する
Duct Sizerの旧いバージョンをダウンロードすることが可能
このダクトサイザーツールを使用してductulatorにお別れを言います！
You're ductulator will soon be part of history with this digital duct sizer around. This tool will simplify sizing air ducts by providing inputs and outputs just like a digital calculator, speeding up your engineering process while reducing errors. Cardboard ductulators shrink/expand overtime loosing accuracy. With this tool you will consistently and accurately deliver results.
Heating, ventilation, and air conditioning (HVAC) engineers and designers will find this tool to be valuable in their everyday design and construction work and can benefit from the its many features including choosing density, friction Factor and I-P or S-I units.