All other detail sheets, information and maps as required by
the Director's action on the preliminary plat shall be shown
and drawn to scale, with all the necessary dimensions shown, including
the length of all lot and street lines, deflections, angles, radii
length of curves, tangent distances and tangent bearings for streets
and any necessary data for the location of any lot or street line
in the field. All dimensions shall be shown in feet and decimals of
feet. A blank oblong, three inches by five inches, shall be reserved
for the use of the approving authority.