'Other' Construction and Allied Systems Info & Downloads

Master Builder Construction Sets

Master Builder was a Meccano-like construction system. It was made in the USA from around 1915 to the mid 1920s


Info from the Metal Constructional Systems Database for MASTER BUILDER

Maker
 
System Type
Meccano principle but sig. differences
Country
USA
Dates
circa 1915 to 1924 (some significant doubt)
Material
Steel
Thread
8-32 (see comment *1)
Boss Type
 
Boss Thread
 
Diametrical Pitch of Gears
32 (see comment *2)
No. of Parts in System
57
Hole Pitch (Spacing) (mm)
12.7
Diameter of holes in Strips(mm)
4.2 (see comment *3)
Diameter of the Bore in Bosses(mm)
 
Diameter of Axle Rods(mm)
4
Types of Nuts and Bolts
Nuts: square
Bolts: round (slotted)
(see comment *4)
Material/Finish of Nuts and Bolts
Steel with a Nickel plated finish
Size of the Nuts across Flats (mm)
8.8
Bolt diameter (mm)
7.6(see comment *5)

Comments
Parts include 3 Formed Strips, curvy Triangular Plate, 5x4,11 holes Flanged Plate, 8 holes Flanged Sector Plate with 2 45° slots, 4" Tube, 3" Wheel. *1 and maybe 5/32x30. *2 from Pinion. *3 4.1,4.3 in some parts. *4 hex Nuts shown too. *5 and maybe 7.3.

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

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A Master Builder manual.