Bral (Il Costruttore Meccanico)

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Bral (Il Costruttore Meccanico/Bral) Construction Sets

Il Costruttore Meccanico was the name given by Bral to its construction system. Later it was called Il Costruttore Bral. It was made in Italy from the early 1920s to 2004. The system can be divided into two main phases. In the first the sets were numbered from 000 to 4. They were later renumbered to 1 to 9 with some additional sets added into the sequence.

Manufacturer / Distributor

Roberto Braglia, Milan, Italy
Later: BRES S.R.L, Milan, Italy (same address)

Info from the Metal Constructional Systems Database for BRAL

Maker
Braglia

System Type
MECCANO & MÄRKLIN features

Country
Italy

Dates
early 1920s to after 2004

Material
Steel

Thread
5/32W

Boss Type
single-tapped

Boss Thread
5/32W

Diametrical Pitch of Gears
38 (see comment *¹)

No. of Parts in System
194

Hole Pitch (Spacing) (mm)
12.7

Diameter of holes in Strips(mm)
4.2 (mean)

Diameter of the Bore in Bosses(mm)
4.1

Diameter of Axle Rods(mm)
4.0

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

Material/Finish of Nuts and Bolts
Steel with a Nickel plated finish
(see comment *²)

Size of the Nuts across Flats (mm)
7.0

Bolt diameter (mm)
6.2(see comment *³)(see comment *⁴)

Comments
Often parts marked BRAL & sets named MECCANICO & IL COSTRUTTORE BRAL/MECCANICO. *¹Later, also 16. *²early/earlier Nuts Nickel plated steel; then zinc plated & brass plated steel Bolts with *³6.0 tappered cheese head(s). Later bright zinc plated steel Nuts, brass plated steel/bright zinc plated steel Bolts with *⁴5.9/5.5 hds.