nm a Barleycorn

nm a ℓP | nm a ym | nm a zm | nm a am | nm a Em | nm a f | nm a fm | nm a re | nm a X | nm a pm | nm a b | nm a AU | nm a A | nm a µin | nm a μ | nm a μm | nm a Twip | nm a mil | nm a cin | nm a cl | nm a Point | nm a mm | nm a Pica | nm a Barleycorn | nm a cm | nm a Fingerbreadth | nm a in | nm a in (US) | nm a Nail (Cloth) | nm a Handbreadth | nm a dm | nm a Hand | nm a Finger (Cloth) | nm a li | nm a li (US) | nm a Span (Cloth) | nm a qr | nm a ft | nm a ft | nm a Cubit (UK) | nm a Cubit (Greek) | nm a Long Cubit | nm a Aln | nm a Russian Archin | nm a Vara Castellana | nm a yd | nm a m | nm a Ell | nm a Famn | nm a fath | nm a fath (US) | nm a Ken | nm a Vara De Tarea | nm a Vara Conuquera | nm a Reed | nm a Long Reed | nm a rd | nm a Perch | nm a Pole | nm a rd (US) | nm a Rope | nm a dam | nm a ch | nm a ch (US) | nm a Roman Actus | nm a Arpent | nm a hm | nm a Cable | nm a Cable (UK) | nm a fur | nm a fur (US) | nm a Cable (US) | nm a kyd | nm a km | nm a Mi (Roman) | nm a mi | nm a mi (US) | nm a mi | nm a nmi | nm a NM (UK) | nm a lea | nm a st league | nm a Nautical League | nm a Nautical League (UK) | nm a Mm | nm a Polar Radius | nm a R⊕ | nm a RJ | nm a Light Sec | nm a Earth Moon Distance | nm a R☉ | nm a Gm | nm a Light Min | nm a AU | nm a Earth Sun Distance | nm a Tm | nm a Light Hr | nm a Light Day | nm a Pm | nm a ly | nm a pc | nm a kly | nm a kpc | nm a Zm | nm a Mly | nm a million ly | nm a Mpc | nm a Ym | nm a Gly | nm a billion ly