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Constructo(1) and Build-O Construction Sets

Constructo(1) and Build-O appear to be repackaged Merkur. Not certain if they was made in Canada under license or imported from Merkur in Czechoslovakia. Constructo(1) came first in 1980 and Build-O followed on in 1981/2

Constructo(1)


Manufacturer / Distributor

Marketed by Parmount Industries, Montreal, Canada.
Not sure if made by: Science Master, 198 Churchhill Boulevard, Greenfield Park, Quebec, Canada.
Or Imported from Merkur, Czechoslovakia


Info from the Metal Constructional Systems Database for CONSTRUCTO [1]

Maker
Merkur
System Type
MERKUR type
Country
Canada
Dates
1980
Material
Steel
Thread
M3.5
Boss Type
single-tapped
Boss Thread
M4;M3
Diametrical Pitch of Gears
30
No. of Parts in System
97 (see comment *1)
Hole Pitch (Spacing) (mm)
10.0
Diameter of holes in Strips(mm)
3.9
Diameter of the Bore in Bosses(mm)
3.8
Diameter of Axle Rods(mm)
3.7
Types of Nuts and Bolts
Nuts: hexagonal
Bolts: cheese (slotted)
Material/Finish of Nuts and Bolts
Steel
Size of the Nuts across Flats (mm)
5.9
Bolt diameter (mm)
6.0

Comments
Lid has boy, sometimes two, with several small models. Parts are from MERKUR & details are assumed the same.

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

NOTE : If the MCS document does not appear in the window below, then refresh the page.

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 Constructo(1) manual.
(23/05/2019)

Build-O


Manufacturer / Distributor

Marketed by Parmount Industries, Montreal, Canada.
Not sure if made by: Science Master, 198 Churchhill Boulevard, Greenfield Park, Quebec, Canada.
Or Imported from Merkur, Czechoslovakia


Info from the Metal Constructional Systems Database for BUILD-O

Maker
Merkur
System Type
MERKUR type
Country
Canada
Dates
1981 to 1982
Material
Steel
Thread
M3.5
Boss Type
single-tapped
Boss Thread
M3;M4
Diametrical Pitch of Gears
30
No. of Parts in System
87 (see comment *1)
Hole Pitch (Spacing) (mm)
10.0
Diameter of holes in Strips(mm)
3.9
Diameter of the Bore in Bosses(mm)
3.8 (mean)
Diameter of Axle Rods(mm)
3.7
Types of Nuts and Bolts
Nuts: hexagonal
Bolts: cheese (slotted)
Material/Finish of Nuts and Bolts
Steel
Size of the Nuts across Flats (mm)
5.9
Bolt diameter (mm)
6.0

Comments
Parts are from MERKUR & details are assumed the same. *1 needs verifying.

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

NOTE : If the MCS document does not appear in the window below, then refresh the page.

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


There are currently no manuals, leaflets or photos etc. of Build-O available for downloading. If you can supply any, please get in contact with me.