'Other' Constructional and Allied Systems Info & Downloads

Techmaster Construction Sets

Techmaster was a simple construction system. It was made in America in ??

Info from the Metal Constructional Systems Database for TECHMASTER

System Type
Meccano principle but sig. differences
Steel (see comment *1)
Boss Type
no boss
Boss Thread
Diametrical Pitch of Gears
No. of Parts in System
26 (approximately)
Hole Pitch (Spacing) (mm)
Diameter of holes in Strips(mm)
3.9 (see comment *2)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
3.2 (see comment *3) (Screwed Rods or Bolts are used as axles.)
Types of Nuts and Bolts
Nuts: square
Bolts: round (slotted)
(see comment *4)
Material/Finish of Nuts and Bolts
Aluminium (Alloy) with a Aluminium (Alloy) finish
(see comment *5)
Size of the Nuts across Flats (mm)
8.0(see comment *6)
Bolt diameter (mm)
5.3(see comment *7)

Shallow Channels instead of strips, Angle Girders, Brackets. *1 A few alloy, wood Spool, plastic Wheels. *2 Channels, 4.5 in Brackets. *3 M19, no Axles. *4 Some Bolts X-head, countersunk. *5 Bolt Nickel plated steel. *6 & 9mm. *7 & dull plated steel 6.3 known.

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

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

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

A Techmaster manual
(Added 09/12/2018)

Various photos of the Techmaster construction system
(Added 09/12/2018)