Half a croissant, on a plate, with a sign in front of it saying '50c'
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TP odometer

Set it and forget it! To know how many more sheet are left.
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Package sez TP roll has "x" sheets. Set the odometer for that number and when you use all but the final 100, a beeper alarm goes off to warn you to buy more. My latest Brita water filter refill kit came with a counter that tells you when to replace the used filter.
bobzaguy, May 14 2001

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       I thought it was an odometer to measure how many miles of toilet paper you used in your life.
Amishman35, May 15 2001
  

       now that would be useful... "you don't know all the sh** I've been through ..."
futurebird, Jul 10 2001
  

       'through me', you mean.
StarChaser, Jul 12 2001
  

       An odometer might work for something like a car tire which maintains (relatively) its diameter. But as you pull TP off the roll, the ratio of TP in hand to number of rotations is decreasing. I would think it would have to be calibrated for a specific manufacturer and ply type in order to work.
georgie, Jan 24 2002
  

       You could solve that problem by running the paper across a second roll which just gets spun as a side effect of rolling, but doesn't change shape. (I think that's what they do when they measure feet of rope in the store, too.)
jutta, Jan 26 2002
  

       Not that I personally see any need for this product, but I do think it would be fun to have.
tchaikovsky, Feb 23 2004
  

       It should also keep track of "average sheets per sh;t", and have 3 memories (one for each person in the family).
phundug, Feb 23 2004
  
      
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