Guess the object

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Comments

  • capt_slog
    capt_slog Posts: 3,965
    Okey dokey.

    It's getting tricky to find things that are neither too obvious nor so obscure that no-one stands a chance. I'm going to have to look in my attic for a few bits and pieces.

    In the meantime, try this...

    DSC_7875.jpg

    This is one I made myself.


    The older I get, the better I was.

  • Anonymous
    Anonymous Posts: 79,667
    For old fashioned film reels? That vertical rod in the foreground goes up and down and rotates the larger disc. Not sure what the weight in the base is for.

    have you tried punching the centre out of that £2 coin?
  • capt_slog
    capt_slog Posts: 3,965
    No and no. Those two pound coins are worth £2 you know!


    The older I get, the better I was.

  • natrix
    natrix Posts: 1,111
    Is that the complete item, or is it part of something else??
    ~~~~~~Sustrans - Join the Movement~~~~~~
  • Phil_D
    Phil_D Posts: 467
    Can we have a picture of the reverse please?
  • capt_slog
    capt_slog Posts: 3,965
    That's the complete item, it functions as it is.

    A view of the reverse? that might give it away too soon. But in this pic the holes have moved round and reveal a bit more.
    0e276a50-d9c7-4fd3-9da8-1f1fff733739.jpg?t=1404472146


    The older I get, the better I was.

  • metronome
    metronome Posts: 670
    Is it a wimshurst machine?
    tick - tick - tick
  • capt_slog
    capt_slog Posts: 3,965
    metronome wrote:
    Is it a wimshurst machine?

    no, but I can see your reasoning.


    The older I get, the better I was.

  • RideOnTime
    RideOnTime Posts: 4,712
    Its a £2 coin stand.
  • capt_slog
    capt_slog Posts: 3,965
    RideOnTime wrote:
    Its a £2 coin stand.

    can't fault you there, in the picture that's just what it's doing :D


    The older I get, the better I was.

  • Phil_D
    Phil_D Posts: 467
    Do the holes serve a purpose?
  • natrix
    natrix Posts: 1,111
    Does it measure pressure??
    ~~~~~~Sustrans - Join the Movement~~~~~~
  • Anonymous
    Anonymous Posts: 79,667
    Do you have the reverse of that photo? can you compare the centre silver part to a regular £1 coin?
  • capt_slog
    capt_slog Posts: 3,965
    Phil_D wrote:
    Do the holes serve a purpose?

    yes. the lack of metal at that point makes the bit of metal on the opposite side of the disc into a counterbalance weight
    natrix wrote:
    Does it measure pressure??
    no, but pressure is sort of involved.


    The older I get, the better I was.

  • Anonymous
    Anonymous Posts: 79,667
    Does the wheel rotate or rock back and forth?
  • blu3cat
    blu3cat Posts: 1,016
    Is the glass perspex there for structural reasons,. or do they perform some other function?

    Also it has a crocodile clip. Some kind of electromacgnetic measurement device?
    "Bed is for sleepy people.
    Let's get a kebab and go to a disco."

    FCN = 3 - 5
    Colnago World Cup 2
  • Phil_D
    Phil_D Posts: 467
    is the little square on the disk significant?
  • capt_slog
    capt_slog Posts: 3,965
    coriordan wrote:
    Does the wheel rotate or rock back and forth?

    rotates
    blu3cat wrote:
    Is the glass perspex there for structural reasons,. or do they perform some other function?

    Also it has a crocodile clip. Some kind of electromacgnetic measurement device?

    The perspex is structural. Not electrical in any way.
    Phil_D wrote:
    is the little square on the disk significant?

    It's the sensor tape for a digital tachometer, laser reflects from it to measure rpm


    The older I get, the better I was.

  • Phil_D
    Phil_D Posts: 467
    The crocodile clip is there for non-electrical purposes?
  • capt_slog
    capt_slog Posts: 3,965
    Phil_D wrote:
    The crocodile clip is there for non-electrical purposes?

    yep. It has a little piece of rubber that blocks a hole and was an easy way of making a valve (which I later found I didn't need).


    The older I get, the better I was.

  • Phil_D
    Phil_D Posts: 467
    So whatever that thing on the back is causes the wheel to start rotating, then the combination of the weight behind the glass and the holes on the disk maintain the movement, and the bit of tape is used to measure how fast the wheel is turning?

    Is that right?
  • capt_slog
    capt_slog Posts: 3,965
    Phil_D wrote:
    So whatever that thing on the back is causes the wheel to start rotating, then the combination of the weight behind the glass and the holes on the disk maintain the movement, and the bit of tape is used to measure how fast the wheel is turning?

    Is that right?

    Sort of but not quite.

    here's the back...

    DSC_7873.jpg?t=1404472280


    The older I get, the better I was.

  • Phil_D
    Phil_D Posts: 467
    Is it a thermometer?
  • natrix
    natrix Posts: 1,111
    Is it a flatusometer???
    ~~~~~~Sustrans - Join the Movement~~~~~~
  • capt_slog
    capt_slog Posts: 3,965
    In the same way that a bike is a complete object, so is this.

    Also in the same way, the bike doesn't do anything until there is a rider on it. This object needs something providing to make it do what it does.


    The older I get, the better I was.

  • Anonymous
    Anonymous Posts: 79,667
    Does the thick thing in the base rotate, which inturn pushes the rods up and down which rotates the metal disc (or the disc moves the rods which rotates the base)?
  • capt_slog
    capt_slog Posts: 3,965
    The black thing inside the base goes up and down, but doesn't touch the insides.


    The older I get, the better I was.

  • natrix
    natrix Posts: 1,111
    Is it a rippleometer??

    It is placed just above the water level in a pond, a sheep is thrown in to the pond and each ripple raises the large piece of cork inside the perspex tube, each rise of the cork is translated into circular motion of the large disc. The bigger the sheep, the greater the ripples, the faster the disc spins :D
    ~~~~~~Sustrans - Join the Movement~~~~~~
  • capt_slog
    capt_slog Posts: 3,965
    natrix wrote:
    Is it a rippleometer??

    It is placed just above the water level in a pond, a sheep is thrown in to the pond and each ripple raises the large piece of cork inside the perspex tube, each rise of the cork is translated into circular motion of the large disc. The bigger the sheep, the greater the ripples, the faster the disc spins :D

    So close.

    in another universe.


    The older I get, the better I was.

  • blu3cat
    blu3cat Posts: 1,016
    Is the disc in the middle a float?

    Is it used for measuring the frequency of fluid "pulses" or jets, the sort that could come out of a peristaltic pump?
    "Bed is for sleepy people.
    Let's get a kebab and go to a disco."

    FCN = 3 - 5
    Colnago World Cup 2

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