![Piano Center Pin Case - Pre-filled Schaff Piano Supply Howard Piano Industries Piano Center Pin Case - Pre-filled Schaff Piano Supply Howard Piano Industries](https://cdn11.bigcommerce.com/s-sramxo/images/stencil/500x500/products/86/23022/piano_center_pin_case_pre_filled_1__46039.1682354436.jpg?c=2)
Spring Tension Gram Gauge for measuring the tightness of piano action flanges. Measures from 0-10 grams of tension. Stainless Steel construction with a U-guard to help protect the pointer.
Grand hammer flanges should generally have 2 to 4 grams of tension when measured at the screw hole.
Repetition levers with the spring disengaged should have approximately from 2 to 6 grams of tension.
The wippen flange should have from 2 to 4 grams of tension.
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