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Builder Boy (Norwood) Construction Sets

Builder Boy was a simple construction system in which the strips, plates etc were joined together by pressed out lugs engaging in slots. It was also sold under the Norwood name - the name of the manufacturer. It was made in USA in around 1949.

Manufacturer / Distributor

Norwood Co., Chicago, Illinois, USA

Info from the Metal Constructional Systems Database for BUILDER BOY (NORWOOD)

System Type
Non-Meccano type
known in 1949
Boss Type
push fit
Boss Thread
Diametrical Pitch of Gears
No. of Parts in System
Hole Pitch (Spacing) (mm)
19.1 (see comment *1)
Diameter of holes in Strips(mm)
See comments *2
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
3.2 (see comment *3)
Types of Nuts and Bolts
Nuts: --
Bolts: --
Material/Finish of Nuts and Bolts
--  --
Size of the Nuts across Flats (mm)
Bolt diameter (mm)

Strips, Flanged Plates, etc but joined by pressed out lugs engaging in slots. Also sold as NORWOOD, the manufacturer. *1 3/4" for most slots. *2 5/16x3/16" slots; 1/8" holes. *3 .125".

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

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