R☉ a Barleycorn

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