Borosilicate glass graduated cylinder, includes plastic guard and plastic detachable hexagonal base. With spout and protection collar. As per DIN EN ISO 4788 standard, Sub Div.: 1.0 ml, Tolerance: +/-1.00 ml, Capacity 100ml with 1ml graduations.
EKG Ruler, features are Seconds scale for PR, QRS, Cycle, Length, Coupling, Escape, and Parasystolic Intervals, Offers both 1 and 2 cycle scales, small enough to fit in a medical coat pocket, Complete with protective sleeve, Size: 1 11/16 x 6 3/8 in
Cylinder Measuring, Graduated, Material: Borosilicate glass, Class -A glass hexagonal base, with spout, Complete with protective guard, as per ASTM E1272 standard, Blue Graduation, Sub. Div. - 0.5 ml, Tolerance - +/-0.17 ml, Capacity: 25 ml