First, have you measured all your bicycles and put the measurements into a spreadsheet or similar document?

Second, what measurements have you done?

~~~~~~~~~~~~~~~~~~~~~
I had a spreadsheet with the measurements for all my bicycles at one point, but then my hard drive crashed and took that with it. So I recreated it a number of years ago, but so far only have 2 of my bicycles on it. One day soon, I'll have to do the rest.

This spreadsheet was invaluable to me when Machak, my Marinoni Ciclo was stolen. He was a customised custom-built bicycle and was very comfortable. Having my spreadsheet of measurements meant that Rowan and I could select a frame to build up, and know that the frame would work for me.

We sat in the shop with the frame, my spreadsheet, and a measuring tape, and checked everything ... and then bought the frame because it was a very close match. If I had a complaint about Machak, it was that his top tube was a little bit too long ... and the new Hasa titanium frame has a slightly shorter top tube.

So, I measure the following things ...

• Seat Tube (Center of Bottom Bracket to Top of Seat Tube)
  
• Notional Seat Tube (Centre of Bottom Bracket to Level from Centre of Front of Top Tube)
  
• Top Tube (Center of Head Tube to Center of Seat Tube)
  
• Down Tube
  
• Seat Stay
  
• Chain Stay
  
• Nose of Saddle to Center of Handlebar
  
• Center of Seatpost (at top) to Center of Handlebar
  
• Handlebar Width (Center to Center)
  
• Crankarm
  
• Bottom Bracket to Top of Saddle at angle of Seat Tube

What do you measure? I'm wondering if there should be other things I need to add to my spreadsheet.