Unless they're both upwards of 7ft tall, that's definitely not 40 cm. More like 26cm tops, because at 40 cm, it'd between her tits on page 32 even if she were 6ft tall.
Just a pet peeve of mine when porn throws out numbers but doesn't even try to be even remotely accurate.
@Asmo Deus: Conversely, Jessy's erect cock is between 3-4 times the span of Delphi's hand which would be consistent with 40cm. Keep up the great work crazysky3d. Art work is great and dialogue will improve with practice.