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Jack and Jill Dandy Construction Sets

Jack and Jill Dandy was a simple construction system. The parts had relatively few holes. The tube and ends in which the sets came were also used in the models. It was made in the USA, in (probably) the late 1940s.

Manufacturer / Distributor

Toy-in-a-Tube Corp., 3619 Packard Road, Niagara Fall, N.Y., USA
(Buffalo, N.Y. is address on the model sheet)

Info from the Metal Constructional Systems Database for JACK / JILL DANDY CONSTRUCTION SET

System Type
Non-Meccano type
known in 1949 (some significant doubt)
Aluminium (Alloy)
Boss Type
no boss
Boss Thread
Diametrical Pitch of Gears
No. of Parts in System
Hole Pitch (Spacing) (mm)
Diameter of holes in Strips(mm)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
Types of Nuts and Bolts
Nuts: hexagonal
Bolts: round (slotted)
Material/Finish of Nuts and Bolts
Steel with a Nickel plated finish
(see comment *1)
Size of the Nuts across Flats (mm)
Bolt diameter (mm)

2 names on canister: JACK/JILL DANDY CONSTRUCTION SET. Parts include a Double Angle Strip with threaded centre hole for threaded Crank Handle. Canister used in some models. *1 plain steel or dull plated steel Nut.

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.