actual size 14 cm
Perpetual Lunar Calendar
€36.00
Astronomy, Spectra series
- Parts
- 88
- Build
- 3 hrs 30 min
- Level
- Intermediate
actual width 22 cm
Astronomy, Spectra series
Earth-Moon Orrery
€46.80
In stock, ships within 2 business days
A simplified orrery of the Earth-Moon system. With each turn of the crank the Moon moves along its orbit, true to the timescale, driven by an epicyclic train: some wheels spin on their own axle and travel around another at the same time. Crank and base in wood-fibre-filled polymer. 120 parts, 5 hours to build.
- Parts
- 120
- Build
- 5 hrs
- Level
- Advanced
- Footprint
- 22 × 22 × 18 cm
- Weight
- 420 g
- Glue and battery
- None
Advanced: several axes to adjust together
Order today: shipped by Thursday 12 November at the latest.
Free delivery in France on orders from €99.
- Missing part replaced free
- Ships within 2 business days
- 14-day returns
- Illustrated manual included
Ages 14 and up. Contains small parts.
Earth-Moon Orrery in detail
The story
As early as the 18th century, simplified orreries were used in classrooms to explain how the Earth and the Moon move. This model keeps that teaching purpose: a single pair of bodies, whose orbits you follow by turning the crank.
What you'll see move
One turn of the crank and the Moon traces its orbit around the Earth, true to the timescale. The epicyclic train works before your eyes: some wheels turn on their own axle and, at the same time, travel around another one.
Specifications
- Number of pieces
- 120 pieces
- Assembly time
- 5 hrs
- Difficulty
- Advanced
- Dimensions
- 22 × 22 × 18 cm
- Weight
- 420 g
- Material
- PLA with 30% wood fibre
- Hardware
- Micro-screws and ball bearings included
- Glue required
- None
- Battery required
- None
In the box
- 120 wood-fibre composite parts, ready to assemble
- Micro-screws and ball bearings
- Illustrated step-by-step assembly manual
- No glue and no batteries: everything fits together and turns by hand
14+
Ages 14 and up. Contains small parts: not suitable for children under 3, choking hazard.
From the same family
actual size 30 cm
Solar Orrery
€76.50
Astronomy, Omega series
- Parts
- 230
- Build
- 10 hrs
- Level
- Expert
actual size 20 cm
Desk Sextant
€40.50
Astronomy, Spectra series
- Parts
- 105
- Build
- 4 hrs
- Level
- Intermediate