18-A
Masnach a busnes
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Mesurau Gwlyb
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Corus (10 bath / 60 hin)
220 L / 48.4 gal
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Bath (6 hin)
22 L /4.84 gal
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Hin (12 log)
3.67 L / 6.46 pt
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Log (1⁄12 hin)
0.31 L / 0.55 pt
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Mesurau Sych
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Homer (1 corus / 10 effa)
220 L
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Effa (3 sea / 10 omer)
22 L
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Sea (hobaid, pwn) (31⁄3 omer)
7.33 L
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Omer (14⁄5 cab)
2.2 L
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Cab
1.22 L
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Chwart
1.08 L / 0.98 dry qt
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Mesurau Hyd
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Ffon fesur hir (6 chufydd hir)
3.11 m / 10.2 troedfedd (tr)
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Ffon fesur (6 chufydd)
2.67 m / 8.75 tr
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Gwrhyd
1.8 m / 6 tr
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Cufydd hir (7 dyrnfedd)
51.8 cm / 20.4 mod.
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Cufydd (2 rychwant / 6 dyrnfedd)
44.5 cm / 17.5 mod.
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Cufydd byr
38 cm / 15 mod.
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1 Stadiwm Rhufeinig
1⁄8 milltir Rufeinig=185 m / 606.95 tr
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1 Lled bys (1⁄4 dyrnfedd)
1.85 cm / 0.73 mod.
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2 Dyrnfedd (4 lled bys)
7.4 cm / 2.9 mod.
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3 Rhychwant (3 dyrnfedd)
22.2 cm / 8.75 mod.
