Your root is 4" right on the nose.

Tip is 1.8125"

Thiokol on the decal is a shade more than 1.25" across the top.

Balsa stock is 1/8"

I don't know the length of the wraps. Mine came apart in water and I ended up painting the bands.

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NAR 79743
NARTrek Silver
I miss being SAM 062

Awaiting First Launch: Too numerous to count
Finishing: Zooch Saturn V; Alway/Nau BioArcas; Estes Expedition; TLP Standard
Repair/Rescue: Cherokee-D (2); Centuri Nike-Smoke; MX-774
On the Bench: 2650;
Dream Stage: 1/39.37 R-7