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Bob(2) Construction Sets

Bob(2) was a construction system using rods and plates and was made in the France. Very similar systems were also made in the UK (Bob(1)) and Switzerland (Bob(3)), with each country having a slightly different system. It was produced in France from 1942 to at least 1952.

Manufacturer / Distributor

Inventor: Jean Perinel, Annemasse, 30 rue du Chablais, France
Manufacturer: J.J.F., 44 Rue Lavoisier, Mulhouse, France.
Distributed by M.R. Maury, Agence Générale, 1 Boulevard de Strasbourg, Paris, France

Info from the Metal Constructional Systems Database for BOB [2]

System Type
Mainly Rods/Tubes
1942 to 1952 (see comment *1)
Steel / Aluminium (Alloy) (see comment *2)
Boss Type
double-tapped (see comment *3)
Boss Thread
M4 (see comment *4)
Diametrical Pitch of Gears
No. of Parts in System
40 (approximately)
Hole Pitch (Spacing) (mm)
Diameter of holes in Strips(mm)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
2.9 (see comment *5)
Types of Nuts and Bolts
Nuts: --
Bolts: cheese (slotted)
(see comment *6)
Material/Finish of Nuts and Bolts
Aluminium (Alloy) with a Aluminium (Alloy) finish
(see comment *7)
Size of the Nuts across Flats (mm)
Bolt diameter (mm)

Joints marked BOB brass.SCDG. *1 & 60l reported. *2 Wooden Wheels, card Plates in early sets. *3*4 & s, 3x.6. *5 & 3.0 (steel). *6*7 In Joints, & slotted cheesehead plain steel 5.0; in boss: slotte roundhead plain steel, Bolt Head Diameter=7.3, & slotte roundhead plain steel 5.5.

The MCS document for this system is shown below. It 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/leaflets which can be downloaded by clicking on the appropriate image.

A Bob(2) instruction manual for set 0.

A Bob(2) instruction manual for set 1.

A Bob(2) instruction manual for set 2.

A Bob(2) instruction manual for set 3.

A Bob(2) instruction manual for set 4.

A Bob(2) instruction instruction leaflet for special models.

A Bob(2) instruction instruction leaflet for the aircraft motor.

The Bob(2) catalogue No.4.

The Bob(2) catalogue No.5.

A Bob(2) leaflet.

Photos of Bob(2) sets.