A&D Medical Mercury-Free Digital Sphygmomanometer (model for use with or without stand - not included)The UM 102 mercury free sphygmomanometer continues the new era of professional blood pressure measurement. It has been designed to be used as an alternative to the mercury column, given mercury is a dangerous good and now banned in most clinical settings. ** Not recommended for personal home use ** UM 102 (A TYPE) has a flat base for stocking multiple units UM 102 (B TYPE) is a stand alone unit that can be used with a stand Auscultatory blood pressure