The check sheet is a simple document that is used for collecting data in real-time and at the location where the data is generated. The document is typically a blank form that is designed for the quick, easy, and efficient recording of the desired information, which can be either quantitative or qualitative. When the information is quantitative, the checksheet is sometimes called a tally sheet.

A defining characteristic of a checksheet is that data is recorded by making marks ("checks") on it. A typical checksheet is divided into regions, and marks made in different regions have different significance. Data is read by observing the location and number of marks on the sheet. 5 Basic types of Check Sheets :

• Classification : A trait such as a defect or failure mode must be classified into a category.
• Location : The physical location of a trait is indicated on a picture of a part or item being evaluated.
• Frequency : The presence or absence of a trait or combination of traits is indicated. Also number of occurrences of a trait on a part can be indicated.
• Measurement Scale : A measurement scale is divided into intervals, and measurements are indicated by checking an appropriate interval.
• Check List : The items to be performed for a task are listed so that, as each is accomplished, it can be indicated as having been completed.
  

An example of a check sheet, as used in process quality control. This sheet records information about the type and number of paint flaws on items coming off a production line. When printed, the right column would have been blank. Subsequently, marks have been made in the right column as Mr Kyder inspected the output of job 629555. It can be seen that "inadequate coverage" is the most common flaw, occurring 17 times.

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