In the book it states that all heavy walkers measure their movement and firing arcs from the center but where do you measure weapon ranges from? The Center like movement or from the hull of the vehicle or weapon mounts themselves. For example my fireballs range 12" napalm thrower is it from the turret or the center of the vehicle limiting the range in doing so.

Page 48 Range and line of sight. " Heavy walkers treat their hull as the miniature's base. The hull includes the weapon mountings, legs, feet, and contral body. It does not include the barrels of weapons or antenna. " Line of sight is done from the center of the walker. Range is done from the front of the Walkers Hull so its legs main body or the weapons mounting so take your pick i would say. But range is measured from base to base page 18.