Every june, as millions of test-takers head to the exam hall, every detail of their stationery can potentially impact their final score. traditional scantron pens are prone to errors, and answer sheets are easily mis-marked. however, scantron rulers, designed specifically for exams as a precision tool, are increasingly becoming the preferred choice for students and parents. their core advantage lies in the use of high-precision transparent plastic material, coupled with laser-etched markings, ensuring..