Used in conjunction
with the Chest Jammer, the Hand Jammer works on a similar premise. The toothed
cam grips the rope so that the jammer cannot slip and when pushed upwards a
spring allows the cam to move slightly so that the rope can pass through, one
way only!
Upwards movement is attained by attaching both the Chest and Hand Jammers' to the rope and placing one or both feet into the Footloop. Then rest your weight on the Chest Jammer and in one movement push the Hand Jammer up whilst bringing the feet upwards in the Footloop. Next, stand up! This will move the Chest Jammer up the rope, to continue repeat as neccessary.