How much can you trust 'My range of motion has improved!'? — Measurement error with a goniometer is about 4° even when measured by the same person; a real change can only be ...

IntroductionYou measure your shoulder range of motion before and after stretching and think, 'Internal rotation increased by 3°!' Or, during a team medical check, you hear, 'It's 5° less than last ...
BMJ

MEASURING SHOULDER EXTERNAL AND INTERNAL ROTATION STRENGTH WITH A HAND-HELD DYNAMOMETER, AND RANGE OF MOTION USING A GONIOMETER AND A DIGITAL ...

Background Shoulder range of motion (ROM) and strength measurements are imperative in the clinical assessment of the overhead athlete in the prevention and rehabilitation of sports related shoulder ...
Hackaday

laser goniometer

Sometimes you absolutely, positively need to know the angle of the cutting edge on a knife. When you do, the best tool for the job is a laser goniometer, and [Felix Immler] shows us three different ...
iLounge

Smartphones and Science: The Transformation of Goniometric Tools

In the annals of scientific progress, the humble goniometer was once a relatively uninspiring tool reserved for specialized fields. However, an unlikely hero has emerged to redefine its utility and ...