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gr is the abbreviation for the apothecary measurement grain VIISS is 7 1/2 (the Roman Numeral for 7 is VII and Roman Numeral for 1/2 is SS) There are 60mg (milligrams) is one grain, VIISS = 450mg

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โˆ™ 2009-03-08 23:35:15
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โˆ™ 2020-07-29 19:03:01
Please show how this was worked out. How did you get the 450mg?ย 
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Toni Fox

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โˆ™ 2021-07-15 20:17:15

7.5 =1 gr (grVIIss= gr=grain, VII=7(roman numerals) ss=1/2 or .5

1gr =60mg

7.5gr x 60mg = 450mg

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Q: How much is gr viiss?
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