Airplanes and Rockets' history & copyright Google search American Modeler Air Trails American Aircraft Modeler Young Men Hobbies Aviation Flying Aces Saturday Evening Post Boys' Life Hobby Distributors Amateur Astronomy Engines & Motors Balsa Densities Silkspan Covering Comics Electronics My Models Model Aircraft Articles Plans Model Boat Articles Plans Model Car Articles Plans Model Train Articles Plans 1941 Crosley 03CB Radio Model helicopter articles & plans Crosswords Model Rocket Articles Plans Restoration Projects Photos Peanuts Collection Model Aircraft Articles Plans Sitemap Homepage Hints Amateur Radio Everything from the homepage Airplanes and Rockets Hero Graphic

About Airplanes & Rockets

Kirt Blattenberger, Webmaster - Airplanes and Rockets

Kirt Blattenberger

BSEE - KB3UON

My Engineering Web: RF Cafe

Carpe Diem! (Seize the Day!)

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 ...

Airplanes And Rockets Copyright 1996 - 2026

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the Airplanes and Rockets website are hereby acknowledged.

My Main Modeling Websites

Academy of Model Aeronautics (AMA) - Airplanes and RocketsAcademy of Model Aeronautics

Tower Hobbies logo - Airplanes and Rockets

Tower Hobbies

Horizon Hobby logo - Airplanes and Rockets

Horizon Hobby

Sig Manufacturing - Airplanes and Rockets

Sig Mfg

Brodak Manufacturing - Airplanes and Rockets

Brodak Mfg

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 in 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.

 

 

A-justo-jig

Photos

User Manual

 

Great Planes Precision Wing Jig

Photos

User Manual

 

 

Posted May 29, 2021

Academy of Model Aeronautics (AMA) Plans Service - Airplanes and Rockets