Bulb-volume drift of a liquid-in-glass thermometer
= Bulb-volume drift of a liquid-in-glass thermometer
A bulb-volume change shifts the indicated <temperature>. Contraction raises the liquid column at a fixed <temperature>; expansion lowers it. Permanent and temporary changes require distinction when interpreting an ice-point check.<Maintenance and Validation of Liquid-in-Glass Thermometers by Christina D. Cross and others>[NIST SP 1088, p. 4 and §§7.4–7.5]{ref}