'Other' Constructional and Allied Systems Info & Downloads

Select System Type      Select Country      System Text Search
(1206 systems found)

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

Manufacturer / Distributor

The Master Builder, 468 Broadway, New York, USA

Info from the Metal Constructional Systems Database for MASTER BUILDER (Ref:M B1)

System Type
Meccano principle but sig. differences
circa 1915 to 1924 (some significant doubt)
8-32 (see comment *1)
Boss Type
Boss Thread
Diametrical Pitch of Gears
32 (see comment *2)
No. of Parts in System
Hole Pitch (Spacing) (mm)
Diameter of holes in Strips(mm)
4.2 (see comment *3)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
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)
Bolt diameter (mm)
7.6(see comment *5)

Pts including 3 Formed Strip(s), curvy Triang Plate(s), 5x4,11 holes Flanged Plate(s), 8 holes Flanged Sector Plate(s) with 2x45° slots, 4" Tube, 3" Wheel. *1Trademark used from 7/14. *2and maybe 5/32x30. *3from Pinion. *44.1,4.3 in some parts. *5hex Nuts shown too. *6 and maybe 7.3.

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 Master Builder manual.