A/4 Stick file

A notebook (also known as a notepad, writing pad, drawing pad, or legal pad) is a book or stack of paper pages that are often ruled and used for purposes such as recording notes or memoranda, other writing, drawing or scrapbooking.

Consistent ink flow
Smooth and dark marking
Marks on CD, DVD, metal, OHP sheets, wood, plastic, glass and ceramics
Water resistant and UV resistant

A calculator is a device that performs arithmetic operations on numbers. The simplest calculators can do only addition, subtraction, multiplication, and division. More sophisticated calculators can handle exponent ial operations, roots, logarithm s, trigonometric functions, and hyperbolic functions.