The Tops Engineer's Computation Pad features a five-square-per-inch, cross-section ruling printed on back that faintly shows through to the front. Computation pad makes diagramming easier. Cross-section ruling printed on back to faintly show through...
The Tops Engineer's Computation Pad features a five-square-per-inch, cross-section ruling printed on back that faintly shows through to the front. Computation pad makes diagramming easier. Cross-section ruling printed on back to faintly show through...