Drawings
Grids
 Hexagonal grid
pdf
ps
*
 Triangular grid
pdf
ps
 Rhombic grid (with diagonals)
pdf
ps
 Brick grid (to draw bead designs)
pdf
ps
 Sheet music
pdf
ps
Papercraft
Flexagons
 Tetrahexaflexagon (x 7) pdf
 Pentahexaflexagon (x 6) pdf
Polyhedra

Triangular prizm (1", x9, glue)
Cube (1", x6, glue)
Tetrahedron (1", x16, no glue)
Tetrahedron (1", x24, glue)
Octahedron (1", x12, glue)
pdf
ps
Calculators
The following designs can be printed on a 3"×5" index cards, cut out and
assembled.
 Addition
pdf
ps
 Time zones conversion (both pin pivot and paper pivot)
ps
This calculator must be customized to include only those timezones that are
important to the user. This is why only .ps version included.
 Timespeeddistance calculator
pdf
This is distance/speed and time scales of НЛ10 slide rule, but in a
circular form. It is somewhat similar to E6B flight computer, but has 3
decades instead of one. Arguably, this simplifies estimation of decimal point
position at the expense of lower precision. Normal slide rule with 2 log scales
(3decades each) is included on second page.
 Simple device to measure observed altitude
pdf
ps
Thread and bob needed for operation
 Calculate number of refills to achieve desired concentration
pdf
ps
 Calendar calculations
pdf
ps
 Kepler equation nomogram
pdf
3D
Other
 Archery targets
*
*
 Archery arm guard pdf
 Marine compass card
ps
pdf
 Angle measuring device (to print on transparency)
pdf
ps
 Pocket chess
pdf
 Pseudo color disks (to print on 3×5 index card)
pdf
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