This standard specifies the requirements for two series of inexpensive “commercial quality” liquid-in-glass thermometers of the solid-stem type suitable for general purpose use in industry, schools and laboratories when great accuracy of measurement is not required: a) a series designated A to H, in which nominal ranges and maximum overall length are specified but which may not be acceptable for testing by the authorized national verification laboratory; b) A series designated J to W of greater accuracy than in a) and with specified ranges and a tolerance on overall length, which may be acceptable for testing by the authorized national verification laboratory. The temperature range covered by each series is from – 100oC to +500oC.