Most aneroid barometers on the market require a calibration curve to yield accurate pressures. The most notable exception is the Fischer Precision Aneroid Barometer, which has unsurpassed accuracy (among aneroids and electronic instruments), and half a century of experience at sea . It provides accurate pressure without the need of a calibration curve. It comes with a certificate guaranteeing its accuracy.

An economical alternative to a precision aneroid barometer is an electronic barometer. These can typically provide pressures to within ±1.5 mb within the mid range of 1030 to 990 mb) without a calibration curve, once they have been set to the proper pressure in the middle of this range. We offer four options in this category. There are quite a few others on the market. See The Barometer Handbook for a survey of available products along with desirable features and cautions, along with an in depth discussion on the value of knowing accurate atmospheric pressure. For each of these four models we offer an optional calibration certificate to document its individual accuracy and provide a calibration curve that will enhance it.

For those who might want the very state of the art in atmospheric pressure measurement, we also offer the Druck-DPI 740 from GE Sensing, which has been recognized worldwide as the standard to which all other traveling barometers can be compared. It comes with a National Institute of Standards and Technology (NIST) traceable certificate of its accuracy which is guaranteed at ±0.14 mb, but is in practice much better.... just as the Fischer Precision Aneroid is guaranteed at ±0.7 mb but is in practice much better. Questions about NIST traceability are addressed at the NIST web site. Starpath has in house two NIST traceable calibrations standards.