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.
- Time-speed-distance calculator
pdf
This is distance/speed and time scales of НЛ-10 slide rule, but in a
circular form. It is somewhat similar to E6-B 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
(3-decades 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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