A Prytz / Hatchet Planimeter, made in 2013, now with free PDF instructions in an updated and improved version.
If you want to learn measuring areas with LEGO, this is the tool you need !
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Prytz / Hatchet Planimeter
0,00 € -Excl. Tax
Steam Machine (Pneumatic)
Price range: 10,00 € through 260,00 € -Excl. Tax
A LEGO Technic Steam Machine powered by a 2-cylinder pneumatic engine, with valve gear mechanism, speed indicator and air control valve.
Maths Instrument : Integraph
7,50 € -Excl. Tax
Designed 14 year ago, I had the chance to rebuilt it for a customer, so I have improved it and made finally the instructions !
This is an Integraph, a mathematics instrument created in 19th century by Abdank-Abakanowicz, for plotting the integral of a graphically defined function.
Great Ball Contraption : The Wave
0,00 € -Excl. Tax
A Great Ball Contraption module, using a wave movement to move the balls. Build in 2010 for a French LEGO meeting, now with reworked 2025 free instructions.
30ft Workboat
10,00 € -Excl. Tax
A LEGO Technic Seismic Workboat based on Jemar / Norpower 30ft boat, with dual winch with ratchet and probe, front winch, seismic element supports, and opening engine cover.
Bilateral Letter Scale
5,00 € -Excl. Tax
A fully mechanical bilateral letter scale, made in LEGO Technic, with dials from 0 to 175gr, ideal for antique objects enthusiasts or to decorate a desk. Instructions and Complete Kits available.
Cardan Lift (GBC)
0,00 € -Excl. Tax
A motorized LEGO Technic Great Ball Contraption Module, features a cardan gear lifting mechanism with stepped input tray.
Switchless Pneumatic Engine
5,00 € -Excl. Tax
A simple LEGO Technic Pneumatic Switchless Engine with one cylinder, custom valves, no set up and building instructions.
Hand Pump (4x Pumps with Air Tank)
0,00 € -Excl. Tax
A LEGO Technic Hand Pump with 4x Pumps and 1x Air Tank, to power your LEGO Pneumatic Creation, with free building instructions.
3-Cylinder Pneumatic Engine
5,00 € -Excl. Tax
A LEGO Technic Pneumatic Engine, with 3 cylinders, 120° scotch yoke crankshaft, unmodified cylinders or switches, with 2023 new instructions.
1/8 Pallet Jack
0,00 € -Excl. Tax
A LEGO Technic 1/8 replica of a Pallet Jack, with steer wheels but no lifting functions, ideal for car diorama. With Free Instructions.
Switchless Pneumatic Machine
10,00 € -Excl. Tax
A LEGO Technic Pneumatic Switchless Machine with adjustable timing, working throttle, with idle mechanism, and openable controls panel.
Mini Slot Machine
5,00 € -Excl. Tax
A LEGO Technic Mini Slot Machine, using Lego marble run mechanism to define probabilities of winning, based on a previous model I have done 10 years ago.
Mud Pump
0,00 € -Excl. Tax
Mud Pump in container style built for the Western Star 6900 Twinsteer, with optional motorization.
Telescope
Price range: 5,00 € through 79,00 € -Excl. Tax
A LEGO Technic reproduction of a Newton Tube Telescope, with equatorial mount. Features folding tripod with extendable legs, azimuth, altitude, right ascension and declination movements.