價格：免費
更新日期：2019-01-23
檔案大小：46.6 MB
目前版本：1.0.1
版本需求：需要 iOS 9.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Convert springs, engineer new springs, compare drum specifications, calculate springs by IPPT, design springs for rolling steel doors, calculate approximate pull, or determine the maximum lift a spring/drum can lift on any job at any time.
Application developed by Service Spring Corporation - a leader in spring manufacturing and customer service in the overhead door industry.
支援平台：iPhone, iPad