Computation pad features a 5-square-per-inch, cross-section ruling printed on back that faintly shows through to the front. Front is printed with frame margins. Design makes diagramming easier. Three-hole punched pad has holes drilled in the left margin to fit in three-ring binders and is glue-bound along that side. Eye-ease green tint paper reduces glare and eyestrain. Letter-size computation pad contains 100 sheets of 16 lb. paper and has a 27 point chipboard back for writing support. TOPS Engineering Computation Pad - 100 Sheets - Stapled/Glued - Back Ruling Surface - Ruled Margin - 15 lb (6803.89 g) Basis Weight - Letter - 8 1/2" (21.59 cm) x 11" (27.94 cm) Sheet Size - Green Paper - Punched - 1 Pad General Information Manufacturer: TOPS ProductsManufacturer Part Number: 35500Manufacturer Website Address: http://www.tops-products.comBrand Name: TOPSProduct Name: Engineering Computation PadMarketing Information: Computation pad features a 5-square-per-inch, cross-section ruling printed on back that faintly shows through to the front. Front is printed with frame margins. Design makes diagramming easier. Three-hole punched pad has holes drilled in the left margin to fit in three-ring binders and is glue-bound along that side. Eye-ease green tint paper reduces glare and eyestrain. Letter-size computation pad contains 100 sheets of 16 lb. paper and has a 27 point chipboard back for writing support.Packaged Quantity: 1 PadProduct Type: Computation Pad Product Information Number of Sheets: 100Sheet Color: GreenSheet Standard: LetterSheet Size: 8 1/2" (21.59 cm) x 11" (27.94 cm)Basis Weight: 15 lb (6803.89 g)Ruling Surface Side: BackNumber of Back Horizontal Squares (per Inch): 5Number of Back Vertical Squares (per Inch): 5Back Ruling Type: Quad RuledMargin Rule Type: RuledBinding Type: Stapled/GluedFeatures: Punched Miscellaneous Recycled: NoAssembly Required: NoCountry of Origin: United StatesEnvironmental Certification: Sustainable Forestry Initiative (SFI) Product Numbers: 025932355004