Post-war production was understandably slow to build up to pre-war levels - it was not until 1949 that the full range inclusive of the No. 10 Set was available once more. In 1948 the No. 1 (reversing) and No. 2 clockwork motors appeared. The Gears Outfit "A" was introduced in 1949. By 1950 the No. 2 clockwork motor was deleted, and the E20R electric short sideplate motor introduced. During 1951 and 1952, the Korean war had a detrimental effect on the quality of some Meccano parts, many of which were finished in matt black.

A very limited range of the special pre-war parts was reissued in 1953. Triangular Flexible Plates, the 4:1 ratio gears and 6-hole Bush Wheels were introduced in 1954. Significantly, and at long last, the model-building difficulties associated with the round end holes of all Flexible and Strip Plates were solved by their being elongated from this time - the new parts were included in revised outfits featuring revised models, the first major revision since the war. The traditional No. 10 Set Manual gave way to a series of twelve model Leaflets, later extended to twenty. Manuals, covers and box labels were all revised. 1956 saw the introduction of the Gears Outfit "B", which included the newly introduced Rod with Keyway, and Keybolt. The Meccano Magazine began a series of Models of the Month in 1956, which totalled 38 by its close in 1962.

In 1958 the shades of the red and green used since the war became much lighter - these shades continued until the conclusion of the red-green period in 1964. The E20R electric motor was replaced by the E15R, a motor which ran very satisfactorily on 12 volts DC, and for which power supplies were now much more common. The No. 10 Set now came in a much more convenient 4-drawer cabinet, in place of the previous cabinet with lift out trays. The time honoured lacing of Meccano parts to backing sheets of cardboard was replaced in 1959 for all main sets, except the No. 9 and 10 Sets, by presentation in easily-damaged vacuum formed plastic trays in the boxes. The Meccano Mechanisms Outfit was introduced in 1959. It was a stand-alone set, in that a number of mechanisms could be built for demonstration purposes entirely from the contents of the set. For the first time in its history, the August 1959 issue of the Meccano Magazine did not appear, the victim of a national printers' strike.

The wartime format of the Meccano Magazine was replaced in 1961 with a much larger format, though still not that of the pre-war size. The larger pages permitted a significant improvement in the quality of photographs. The early part of 1962 saw the introduction of further new parts, new Instruction Manuals and a new compact geared Emebo motor. New parts included flexible Plastic Plates, both transparent and coloured, larger Road and Steering Wheels, single Braced Girders, and Narrow Strips - these latter had been mooted, on and off, for nearly forty years! The new red and green parts were to have a short life in these colours, since a major colour change was to occur just two years later. The new Instruction Manuals made use of exploded views to explain construction details - other than the name of the model in several languages, there was now no accompanying text.

The final, and most significant introduction from this period was the Elektrikit, a fine and remarkably comprehensive electrical set which had been introduced earlier by Meccano France. Elektrikit parts are highly valued today for their usefulness and versatility in electrical model building.