let μmInchRatio = 25.4e3<μm/inch>
let μmToInch(x: float<μm>) : float<inch> = x / μmInchRatio
let inchToμm(x: float<inch>) : float<μm> = x * μmInchRatio
let μmInchRatio = 25.4e3<μm/inch>
let μmToInch(x: float<μm>) : float<inch> = x / μmInchRatio
let inchToμm(x: float<inch>) : float<μm> = x * μmInchRatio