Attn Dave Scales manufactured for Carat measurement are usually much
more sensitive than gram scales. The inexpensive carat scales are
Portable with 50 carat or 100 carat capacity (that is 10 grams or 20
grams & they are accurate to three decimals .001 in grams).
Yes you can multiply grams with 5 to get carat weight but what is
the accuracy of the grams (for most gold scales it is usually 0.1
gram hence your accuracy will be .5 carat)
When you look for gram scales in .001 (3decimles) then you are back
to square one "Expensive". The answer to your question is that
Portable scales made for carat weight are your best bet & jewelry
supply houses carry these more than others.
If you would like to save money and you do not use the scale
everyday. The old fashion two pan carat scale that comes in a wooden
box 50 carat capacity which has an accuracy of about 0.05 carat can
be bought for about $28.00
If you need a digital then you have Four portable models to choose
from. Nexus, Acculab, Dendretics, Tanita. Nexus & Acculabs are made
in China. Dendretics is made in USA. Tanita is made in Japan.
I would recommend Tanita as it is moderatly priced and it has the
best Warranty and Track record. These are available in 50 carat and
100 carat capacity. The approximate cost of the 50 carat is $220.00
and 100 carat is $240.00. I would be able to assist you if you need
these. Tucson Booth 442 - 444 Holidome Palo Verde
Regards Kenneth Singh.