Does anyone know the purpose of these tools?

[Fenton Murray]

Possibly to turn the slotted nuts on the key upstop.
Fenton
  ----- Original Message ----- 
  From: Francisco Motta, Afinador de Pianos 
  To: pianotech at ptg.org 
  Sent: Thursday, July 24, 2008 2:41 PM
  Subject: Does anyone know the purpose of these tools?


  FOR ALL: 
  Does anyone know the purpose of these tools? 
  They are made of sheet steel with 0.60mm. The largest is 81mm in length and the smallest 55mm. 
  The first impression is that this is a model for the bridges construction. 
  Who has ever seen or used? 
  Thankful. 
  Francisco Motta 
  Belo Horizonte-MG 
  Brazil
  .
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