![]() Congratulations on your purchase of the Construction Master® Pro! Now you have the convenience and accuracy of the original construction industry Advanced Feet-Inch-Fraction Construction-Math Calculator for your iOS device. The Construction Master Pro for your iOS device emulates model 4065/4080 v3.1 and the iPad app emulates model 44080 v3.1. © 2025, Calculated Industries, Inc., All Rights Reserved BOSCH® and Bluetooth® are registered trademarks of Robert Bosch GMBH and Bluetooth Special Interest Group (SIG), respectively. All Rights Reserved. Terms of Service and Privacy Policy |