![]() Caliper is expressed as a point size in thousandths of an inch.The measurement of a paper's thickness is also known as it's "caliper" and is measured using a tool called a micrometer.The heavier paper grade commonly referred to as "cardstock" is technically known as "cover".When standard size sheets are cut down to commonly used sizes, they are still referred to by their original basis weight calculation.So a larger standard size sheet of a lighter thinner text-weight paper can weigh more than a smaller standard size sheet of a thicker heavier cover-weight paper.If 500 sheets of a paper's standard sheet size weighs 100 lbs., then the paper weight or basis weight of that type of paper will be 100 lb. ![]() Each type of paper has it's own range of basis weights because their standard sizes are different.Paper weight is measured in pounds per 500 standard sheets within its type.Here are a few examples of paper type standard sheet sizes: Each type of paper has a different "standard sheet" size.Let's explain further!īond, Book, Text, Index, Bristol, Laid, Wove, and Cover Paper comes in many types or categories, each with a unique weight in LBS because of the way it is calculated.The TYPE of paper is a key element when using LBS because. ![]()
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