This little project is just a little fun so do not take it too seriously. I am just curious to find out if the dimensions are close to the actual ones. There will be definately errors in this test, human error (that's me) and accuracy of measuring equipment used. The digital gauge which I am using needs no calibration and it's not worth it. The calibration cost will kill me and it's more economical to buy new. This China made digital gauge shouldn't be too far off since we are not going into microns. A difference of 2% should be acceptable. I will leave the height out as it is quite tedious to take that measurement. If the length is within that 2%, I would say it's perfect. The width is a challenge at times as you do not know the reference point to measure.
Real Dimensions: 4305mm x 1690mm x 1285mm
Measured Dimensions: 72.34mm x 28.24mm
Blown-Up Dimensions: 4340mm x 1694mm
Percentage Difference: L (+0.81%), W (+0.24%)
Verdict: That's very close to the real thing!
Real Dimensions: 5120mm x 1890mm x 1450mm
Measured Dimensions: 75.35mm x 28.06mm
Blown-Up Dimensions: 4973mm x 1852mm
Percentage Difference: L (-2.87%), W(-2.01%)
Verdict: Should have been 1/68 instead