Stanley® 33-430 PowerLock® Classic Tape Rule, 30' x 1"This PowerLock 30 ft Tape Measure has all the features you need for precise measurements every time. With its Tru Zero end hook, you can draw circles and arcs, and framing a wall is made easy with 16" and 19. 2" stud center markings. 7' blade standout Mylar polyester film extends life of entire blade Chrome high impact ABS case is job site tough Secure blade lock won't creep during measurements 16" and 19. 2" stud center markings simplify framing jobs