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The TOPS TOP35502 is a letter-size engineer pad designed for technical drafting, computation, and field calculations. The pad measures 8.5 x 11 inches and is printed on 16 lb green eye-ease tint paper to reduce glare and eyestrain during extended use. A 5-square-per-inch cross-section grid is printed on the back of each sheet and shows through faintly to the front, keeping the ruling visible as a guide without interfering with legibility. Frame margins printed on the front face aid in diagram layout and notation alignment. A 27-point chipboard backer provides a firm writing surface when the pad is used away from a desk. This pad is used by engineers, architects, HVAC designers, and technicians who need structured paper for load calculations, system layouts, and equipment schedules.
The TOP35502 is suited for office drafting stations, field service trucks, and job-site use where structured calculation or diagramming is required. The 3-hole punch along the left margin allows completed sheets to be transferred directly into standard 3-ring binders for documentation. The glue-bound left edge keeps sheets secure during use and allows clean removal. This pad is commonly used for HVAC heat load calculations, electrical panel schedules, piping schematics, and general engineering computation work.
Designed as a standard letter-size engineer pad compatible with 3-ring binders and suitable for general computation, technical drafting, and engineering documentation tasks.
No installation is required for this product. Store pads flat in a dry environment to prevent curl or moisture damage to the chipboard backer. When filing completed sheets in binders, align the 3-hole punch pattern to standard binder ring spacing before inserting.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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