Blue washers in felt for placing on tuning pins on harpsichords, clavichords and spinets to show F strings which will help when tuning your early keyboard instrument. Sold in packet of 20.
- Thickness 1.0mm
- Material Felt
- 12.5mm Diameter
These can either be put on the top of the pin or cut and slid round the bottom of the pin, originally when the instrument was made these would have been fitted under the winding of the string.