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A-justo-jig and Great Planes Wing Jig

November 1978 RC Modeler cover - Airplanes and RocketsA-justo-jig advertisement - Airplanes and Rockets

A-justo-jig advertisement on page 160 of the November 1978 RC Modeler magazine.

Sometime in the 1970s, a radically new model airplane building tool appeared in R/C Modeler, American Aircraft Modeler, and other model aviation magazines - the "A-justo-jig." It was pitched as the answer to all the many misaligned wings and fuselages that were preventing everyone from being a world class radio control and/or control line pattern flyer and/or scale master. Undoubtedly, use of a jig to align and hold in place ribs, leading and trailing edges, fuselage side and formers, etc., did/does result in a more perfect model airframes; however, in the many hundreds of model aircraft building articles I have seen in magazines, to my recollection not one featured an A-justo-jig. Many showed custom jigs designed by builders, but none in a commercial jig. Sometime in the 1990's Great Planes introduced a Precision Wing Jig.

In 1978, the cost of the A-justo-jig was $49.95 and the supplementary fuselage jig was $10.00. Per the BLS Inflation Calculator, that is the equivalent of $219.60 for the wing jig and $43.96 for the fuselage jig.





User Manual


Great Planes Precision Wing Jig


User Manual



Posted May 29, 2021

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Even during the busiest times of my life I have endeavored to maintain some form of model building activity. This site has been created to help me chronicle my journey through a lifelong involvement in model aviation, which all began in Mayo, MD ...

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