Agraffe

Back checks

Hammer rail

Piano ribs

Cast-iron piano frame

Piano tuning pins

Piano tuning lever

Piano crossed strings

Piano straight strings

Ebony sharp keys

Tuning fork

Double escapement

Piano damper

Making long French loops

Hammer felt

Shim

Relative humidity

Key ivory

Sides of keys

New hammer shanks with flanges

Overdampers and “bayonet” action

Pleyel action with double escapement

Schwander action

Viennese action

Piano front rail punchings

Keyboard balance mortises

Wooden framed upright pianos (1860-1920)

Straight-strung grand pianos

Piano-forte

Piano capstans

Piano balance pins

Guide pins

Piano hammer knuckles

Pinblock

Frame bushing

Piano soundboard