For years the MPC Titan-IIIC kit has been incorrectly posted as a 1/100 scale kit. Actually it is a 1/120 scale kit. The error was created when the original manufacturer divided "feet" dimensions by 100 and incorrectly used them as "inch" dimensions in the kit. Check out the solid boosters, which were 10' (120") diameter by 85' (1020") long. Do the MATH.
* If the scale was 1/100, the kit boosters should measure 1.2" x 10.2".
* However the kit boosters measure 1.0" x 8.5" which is 1/120 scale.
The only correct 1/100 dimension is the larger center core diameter of 1.2". I believe this was a result of the extra space needed for the rocket motor if the original kit was built to be launched. The kit is an impressive model of the actual launch vehicle. I would have thought someone in the modeling community would have caught the error during its half century promotion. This is really a 1/120 scale kit!