The plastic body with the inside dimensions of the tuning arm and the fastening screw serves to reduce the frequency given by the tuner. The weights is placed in the upper half of the tuning arm and slows down the oscillation of the arm by its weight, so there is a measurable difference from the original frequency without the load.
Fatigue or excessive tightening of the fastening bolt causes the bulk to break and degrade
Doesn't matter Doesn't matter
Verification in SounCard Scope
Soundcard Scope uses a sound card as an oscilloscope. Based on the sound card features, it is an oscilloscope with a limited frequency range from Hz to 20 kHz. It is accurate enough to display frequency analysis. (Zeitnitz, 2017)
The tuner with the resonant box breaks out and its frequency is verified in the immediate vicinity of the flap microphone.
Measured 440Hz tuner frequency with Soundcard Scope.
On the top of the arm, the original weights is placed and the tuner frequency is re-measured.
Measured frequency 424 Hz with original weights.
In the same position, the original weights is replaced and the frequency is re-measured.
Measured frequency 424 Hz with molded and printed weights.
Summary of verification
On the basis of the measured values, it can be stated that the newly created weights causes the tuner to vibrate at the same frequency as the original load and is an adequate replacement.