Leonardo

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Leonardo Construction Sets

Leonardo was a Meccano-like construction system. It was made in Italy shortly after the second world war

Manufacturer / Distributor

Gemma, Via Borgazzi 4, Monza, Italy

Info from the Metal Constructional Systems Database for LEONARDO (Ref:LEO)

Maker

System Type
MECCANO & MÄRKLIN features

Country
Italy

Dates
known in 1946 to known in 1947

Material
Steel (see comment *¹)

Thread
M4

Boss Type
double-tapped

Boss Thread
M4

Diametrical Pitch of Gears
39

No. of Parts in System
324

Hole Pitch (Spacing) (mm)
12.0

Diameter of holes in Strips(mm)
4.3

Diameter of the Bore in Bosses(mm)

Diameter of Axle Rods(mm)
4.0

Types of Nuts and Bolts
Nuts: hexagonal
Bolts: cheese (slotted)

Material/Finish of Nuts and Bolts
Steel

Size of the Nuts across Flats (mm)
`

Bolt diameter (mm)

Comments
Grey parts largely based on MECCANO in 1929 plus some MÄRKLIN Brackets. Original parts including unusual Dredger Bucket and Z-Girders. *¹ Many cast Pulleys, Gears of lead based alloy.

The MCS document for this system is shown below. It can also be downloaded to your computer if desired here

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Pages from the 'Other Systems Newsletter' which contain information on this system are shown below. They can also be downloaded to your computer if desired here

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The report can be zoomed into, made full screen or downloaded as a pdf document by using the controls provided

Below there are manuals/leafets which can be downloaded by clicking on the appropriate image.

A photocopy of a Leonardo manual.

A photocopy of a Leonardo illustrated parts list and standard mechanisms.