Beaker measures developed for intensive dispensing use. Manufactured according to BS.1922 in heavy walled borosilicate glass with permanent enamel graduations. The flat bottom allows for easier stirring on hotplates and homogenising than the more traditional designs. They are also lighter, which aids handling, especially in the larger sizes. The calibration line spacing and accuracy are the same as traditional conical and bell measures.Each measure is Government Stamped to indicate that each graduation line has been independently checked to ensure the volume is correct.