English to Portuguese Tech/Engineering Mechanics / Mech Engineering

However, they are generally
adjustable within the range of approximately 27 to
38.5 in (68 to 98 cm). (Note: Most adjustable
aluminum assistive devices [e.g., canes, crutches, walkers]
use a push-button mechanism to alter height;
many include a reinforcing cuff tightened by a thumbscrew
or rotation sleeve.)