11How to take measurements with HALOHALO uses a new concept to standardise joint measurement. Using digitaltechnologies, HALO delivers a new level of accuracy and standardisation tojoint range measurements.If your HALO is not on, turn it on by pressing and holding Button 2 for twoseconds. Then follow The 3-Step overview process to take a measurement.Holding the HALOThe HALO Digital Goniometer isdesigned to be used one-handed,leaving your other hand free tosupport the patient’s limb. Withthe display facing you, curve yourhand around the HALO with yourfingers resting on Buttons 1 or 2,whichever is most comfortable.Only activate the lasers when the device is close to the limb tobe measured.