The Health o meter® Professional 201HR-1110 is an optional mechanical height rod for the Antimicrobial 3105 series of scales. The durable aluminum height rod withstands frequent use, and rigorous laboratory testing shows that the 201HR-3105 lasts 2 ½ times longer than similar products. The 201HR-3105 has an extensive measuring range of 2"-90" in 1/16" increments (6 cm-230cm in 1mm increments). The optional mechanical height rod has upgraded brackets making assembly quick and easy.