R1 Shock Proof® Aneroid SphygmomanometerHandheld, portable, aneroid Sphygmomanometer with patent pending shock proof technology. Validated by the British and Irish Hypertension Society. Available in white or black. Conventional aneroid sphygmomanometers are shock sensitive and thus their measurement accuracy may be impaired after an impact or a fall to the floor, resulting in uncertainty of accurate measurement. The R1 shock proof Aneroid Sphygmomanometer is tested to a height of 120 cm (4