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ConstructO(4) Construction Sets

ConstructO(4) was a Meccano-like construction system. It was made in the UK.

Manufacturer / Distributor

T.A. Butler & Co, Southborne, Bournemouth, UK

Info from the Metal Constructional Systems Database for CONSTRUCTO [4]

System Type
Hole pitch >12.7mm
United Kingdom
circa 1950
Steel / Aluminium (Alloy) (see comment *1)
Boss Type
not tapped
Boss Thread
Diametrical Pitch of Gears
No. of Parts in System
Hole Pitch (Spacing) (mm)
Diameter of holes in Strips(mm)
3.5 (see comment *2)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
5.6 (see comment *3)
Types of Nuts and Bolts
Nuts: hexagonal
Bolts: round (slotted)
(see comment *4)
Material/Finish of Nuts and Bolts
Brass with a Brass finish
(see comment *5)
Size of the Nuts across Flats (mm)
4.5(see comment *6)
Bolt diameter (mm)
5.3(see comment *7)

Set lid with boy behind Mobile Crane. As PLEASURE BEACH except CONSTRUCTO on some parts. *1Plastic Wheels. *2Most steel or aluminium. *3to 4; & 6.2. *4& 2"x3.5mm. *5*6& square nut & cheese bolt in steel. *7*8 needs check. Also 6BA hex nut & round slotted bolt plain brass 4.8 4.8 for Bulb Holder.

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/leafets which can be downloaded by clicking on the appropriate image.

The ConstructO(4) manual.

The ConstructO(4) supplementary manual.