Obsolete Skills I

Coturnix's Obligatory Readings of the Day for yesterday included a link to a list of obsolete technical skills. Both sites have interesting discussions and the concept has spawned, not one, but two wikis on the subject. I had most of the skills on the list at one time, but can't guarantee doing some of them anymore without poking someone's eye out. However, among thew amazing skills I can claim are:

• Dialing a rotary phone
  
• Counting change
  
• Changing the ribbon in a typewriter
  
• Threading a 16mm projector
  
• Cuing a track on a vinyl record
  
• Running a mimeograph machine
  
• Doing long division
  
• Trimming the tip on a quill pen
  
• Tuning the picture on a television set

What amazing technical skills do you have?