Critical applications require accurate sensors. Not all accuracy statements are created equal—they vary from manufacturer to manufacturer. This white paper will address different methods of deriving accuracy specifications, with a concentration on pressure transducers and transmitters, where this phenomenon is most prevalent. However, the concepts may be universally applied to other pressure instruments. The goal is to inform engineers and end users how to decipher accuracy statements so they can ensure the instrument they are choosing honestly satisfies their accuracy specification requirements.