Maths Instrument : Integraph 30/10/2025 30/10/2025 LEGO Technic replica of an Integraph, a mathematics instrument created in 19th century by Abdank-Abakanowicz, for plotting the integral of a graphically defined function. Designed in 2011, finally with instructions !
Orthogonal Planimeter 03/02/2013 08/02/2024 A mechanical device used for calculating area on an arbitrary shape….
Pritz Hatchet Planimeter 19/01/2013 08/02/2024 My first planimeter, very simple and very demonstrative to understand how a mechanical device can calculate area….
Integraph : Graphic Planimeter 17/02/2011 02/09/2025 An Integraph is an instrument used in mathematics for plotting the integral of a graphically defined function….
