Malta

pre-metric units of mass

				tunnellata
			qantar	12.8
		wizna	20	256
	ratal	5	100	1,280
uqija	30	150	3,000	38,400
0.933 oz. av.	1.750 lbs av	8.750 lbs av	175 lbs av	2,240 lbs av

At least as early as 1840 the qantar was treated commercially as equal to 175 pounds avoirdupois. In 1921 all surviving units were defined legally by British equivalents.

In the Italian period there were two versions of the ratal (or, to give it its Italian name, the rottolo), in the ratio 30:33, which is the number of onces to the rottolo. This is a common Italian division of the ratal.

	Maltese rottolo	Maltese rottolo grosso
oncia	30	33
26.383 g	791.50 g	870.65 g

For precious metals, pearls, gemstones, etc.

During the Italian period precious metals were weighed with this system:

									cantaro
								pesa	20
							rotolo	5	100
						lira	2.5	12.5	250
					oncia	12	30	150	3000
				quarta	4	48	120	600	12000
			octavo	2	8	96	240	1200	24,000
	sedicesimo		2	4	16	192	480	2400	48,000
	trapeso	2	4	8	32	384	960	4800	96,000
coccio	18	36	72	144	576	6912	17,280	86,400	1,728,000
45.8 mg	.8245 g	1.65 g	3.30 g	6.60 g	26.385 g	316.6 g	791.5 g	3.96 kg	79.15 kg

Doursther (1840) pages 87, 105, 226, 369, 562.

Robert Montgomery Martin.
History of the Colonies of the British Empire in the West Indies, South America, North America, Asia...
London: W. H. Allen & Co. and George Routledge, 1843.

Page 586.