Stylus gauge recommendations ?

To elaborate further, the Ortofon and Clearaudio measure perfectly, but the Ortofon is easier to use due to a larger measuring area. I have also used a Riverstone which is mostly accurate, usually within 1/10 gram, but suffers I believe from having a separate  attachment for the record level measuring area whereas the others are integrated into the chassis with less chance for deviation in measurement. 

Based on all your kind replies I've decided to go with the Ortofon DS3, price not being a factor considering the potential hazards when handling cartridges.

Thanks to all.

Good call.

Currently use Rega, bought/,tried many. Depends on one's level of passion.

Another vote for the Riverstone- 

Years back (around 4o yrs?) I started with a shure balance beam- it was very accurate. Then I splurged on aa very pricey digital scale from the UK. Total crap. About a year or two ago I bought the Riverstone (about $30) and I'm delighted