2
Crown-Sole Cross Section
2
Pillar
1
Convergence Ruler
2
Ruler (Footstep)
1
Plumb
2
Ruler
1
Exponent, Part 1
2
Broken Meridians
3
Landfall (Inverted Mercator)
2
Study for "Marcator"
2
Fathom, Rotation
1
Vergence
2
Drift
2
Slip Grid
1
Auger
2
For a Sphere with Nine Poles
1
If Were Would Rule
2
Plumbs
2
Some Kinds of Luck