# item.guide
Side-by-Side Comparison Gaming Supplies

Battle Mats & Grids vs. Polyhedral RPG Dice

Comparing 2 standards across 18 specifications. 18 key differences identified.

Comparing:
Battle Mats & Grids
Polyhedral RPG Dice

Battle mats are standardized surface grids used in tabletop RPGs and wargames. RPG mats feature a standard 1-inch (25.4 mm) square or hex grid where each square represents 5 feet in game scale. Wargaming mats adhere to official table dimension tiers: 44×30 inches (Combat Patrol / Spearhead), 44×60 inches (Strike Force / Incursion), and 4×6 feet (classic large-scale battles).

View full Battle Mats & Grids spec sheet →

Polyhedral dice are standardized 7-die sets used in tabletop role-playing games (TTRPGs) including Dungeons & Dragons and Pathfinder. A standard set consists of D4 (tetrahedron), D6 (cube), D8 (octahedron), D10 (pentagonal trapezohedron), D% (percentile tens), D12 (dodecahedron), and D20 (icosahedron), manufactured in standard 16 mm to 22 mm millimeter heights based on Platonic solids.

View full Polyhedral RPG Dice spec sheet →

Specification Comparison Table

18 Parameters
Parameter / Spec
Standard TTRPG Grid Square
1.0 × 1.0 inch (25.4 × 25.4 mm)
TTRPG Scale Ratio
1 inch = 5 feet (1:60 scale) standard D&D / Pathfinder
Standard TTRPG Hex Grid
1.0 inch (25.4 mm) vertex-to-vertex / flat-to-flat
Combat Patrol / Spearhead Mat
44 × 30 inches (1118 × 762 mm / 500–1000 pts)
Strike Force / Incursion Mat
44 × 60 inches (1118 × 1524 mm / 2000 pts)
Classic Full-Scale Wargame Mat
4 × 6 feet (48 × 72 inches / 1219 × 1829 mm)
Common Mat Materials
Neoprene (Mousepad), Vinyl Wet-Erase, Cloth
Standard Set Composition
7 Dice (D4, D6, D8, D10, D% tens, D12, D20)
D4 Shape & Height
Tetrahedron (4 triangular faces) 16 to 18 mm (vertex to base)
D6 Shape & Height
Cube (6 square faces) 16 mm (0.63 inches face-to-face)
D8 Shape & Height
Octahedron (8 triangular faces) 15 to 16 mm (face-to-face)
D10 / D% Shape & Height
Pentagonal Trapezohedron (10 kite faces) 16 mm (vertex-to-vertex)
D12 Shape & Height
Dodecahedron (12 pentagonal faces) 18 mm (face-to-face)
D20 Shape & Height
Icosahedron (20 triangular faces) 20 to 22 mm (face-to-face)
Opposite Faces Sum (D6)
7 (1+6, 2+5, 3+4)
Opposite Faces Sum (D8)
9 (1+8, 2+7, etc.)
Opposite Faces Sum (D12)
13 (1+12, 2+11, etc.)
Opposite Faces Sum (D20)
21 (1+20, 2+19, etc.)