Explanations and Features: * Scale: To reduce the effect of the angular position difference, the large scale (15 cm) is printed with visible black numbers with an outer edge raised to provide an accurate view from all angles. * Blower & Valve: Chrome plated valve with filter to facilitate delicate air release. The extra-large blower is made of non-allergic, high-density rubber, cracked, non-stick and PVC-free.
