'Other' Construction and Allied Systems Info & Downloads

Duplex Standard Construction Toy Construction Sets

Duplex Standard Construction Toy was a development of the Erector construction system with alternate large and small holes. It was made in the USA from 1929 to 1932.


Info from the Metal Constructional Systems Database for DUPLEX STANDARD CONSTRUCTION TOY

Maker
Gilbert Erector
System Type
ERECTOR type
Country
USA
Dates
1929 to 1932
Material
Steel
Thread
8-32
Boss Type
single-tapped
Boss Thread
6-32
Diametrical Pitch of Gears
24
No. of Parts in System
207
Hole Pitch (Spacing) (mm)
12.7 (multiples of value shown, including half.)
Diameter of holes in Strips(mm)
4.4 (see comment *1)
Diameter of the Bore in Bosses(mm)
4.1
Diameter of Axle Rods(mm)
4.0
Types of Nuts and Bolts
Nuts: square
Bolts: round (slotted)
Material/Finish of Nuts and Bolts
Steel with a Nickel plated finish
Size of the Nuts across Flats (mm)
6.4
Bolt diameter (mm)
7.2

Comments
Generic name of modified ERECTOR with alternate large & small holes in Strips, Plates. Sold by stores under brand names, see LITTLE JIM [1], STEEL-TECH, STEEL ENGINEERING [2, TRUMODEL. Data from LITTLE JIM set. *1 & 6.6.

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

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


A Duplex Standard Construction Toy manual for set 4.