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Please give detailed answers to all questions and make a drawing of a hammer head shape on a separate
sheet so that we will be able to manufacture the correct set of hammer heads for you.

Type of instrument:     Date of manufacture:

SPECIFICATIONS OF HAMMER HEADS FOR GRAND AND UPRIGHT PIANOS
 

 
Total length (Lt): Bass Treble
Width of hammers (b): Bass Treble
Quantity of hammers: Bass Treble
Tails shaped and tailed (Sb): yes no
Bored: yes no
Bored length (Lb): Bass Treble
Pitch/Rake-Angle (W °): Bass Treble
Diameter of boring (Ø):
Horizontal angle
Gon (400°):   Degree (360°):

Bass
Pieces:
Degree:

 
Treble
Pieces:
Degree:
wood-form:
symmetric

asymmetric

c-form
Moulding: Hornbeam Mahogany Walnut Maple
Topfelt: soft medium hard hard Natural Felt
Color:                          
Underfelt: yes no
Impregnation: yes no
Bass hammers cut: yes no
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