The value, the simplicity of use, precision, and small footprint make the Dado a winner throughout! I am very pleased and would Really advise this welder." ∂ v → ∂ t + ( v → ∗ ▽ ) v → = − 1 ρ ▽ P + v ▽ v → + β g → Δ T displaystyle partial overrightarrow v above partial t +( overrightarrow v *bigtriangledown ) overright