Test instrument for determining patient health or checking fruit and vegetables

摘要

The test instrument has a hand grip (12) supporting a relatively oscillating test oscillation head (20), via a spring rod (18). The length of the spring rod can be reduced without impairing the oscillation characteristics of the oscillation head by providing it with a spring section (36) at the hand grip end The spring section may be provided as a coil spring section or a wave spring section, the adjacent end section (34) fitted with a fixing element (16), for securing the spring rod to the hand grip.