Pritz Hatchet Planimeter

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15 Responses

  1. gauss says:

    where can we get this kind of legos

  2. Nico71 says:

    can you explain what it is not working ?

  3. Edward Harimoto says:

    It isn’t working for me 🙁

  4. Nico71 says:

    bonjour, non Désolé mais avec les photos on voit qu’il ne faut pas beaucoup de pièce.

  5. Pierre ZARADER says:


    Un résumé des pièces nécessaires au montage est-il disponible?

    Merci d’avance.


  6. Nico71 says:

    Elle se trouve dans les instructions de montage à la fin 😉

  7. Guillaume DEREX says:

    Salut! comme je sais que tu parles francais, j’écris ce com en francais, c’est plus facile! Estce qu’on pourrait avoir le fichier image de la roue graduée stp?
    marci d’avanc!

  8. Marco Bakera says:

    Thanks for that great explanation. I will give it to my students in a calculus course as a project.

  9. Nico71 says:

    I have made an 10cm quare and measure it and report the measure on the circle, then the same thing for 1cm, 5cm and so on.

  10. Alec says:

    Where do u get the circle to measure the centimeters

  11. Nico71 says:

    Yes you can, but you may draw the dial to obtain the good scale. You can also change the gearing without changing the dial but modify the lenght of cursor. Regards

  12. Nico71 says:

    Thank you David !

  13. Tor Woodhams Lund says:

    very cool! I built it as soon as I got home from school. Me and my parents love it!

  14. George Creanga says:

    This is a great device! Thank you for instructions. One question: can I substitute the big 40 teeth gear with something else? I don’t have such a big gear..

  15. David Luders says:

    I like this a lot! Prior to AutoCAD and other virtual drawing tools, using planimeters like these were THE WAY to quickly determine areas. I remember using a device like this. Thanks for sharing!

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