Custom Home Others, Umbrella Rain Gauge - Impact Resistant, Designed for rainy day work, this umbrella measures rainfall in inches and or centimeters, both shown in large, easy-to-see lettering; Molded in sturdy, impact plastic; the non-glass tube is plastic which won't break if dropped; May be attached to a post or inserted in garden soil (mounting screws are not supplied) ... #K230 $3.98/each.