4 ms·
TLDR: Rest arm on table while taking a reading. Don't let your arm hang, unsupported, or flop on your lap. (15th paragraph has the meat of the article).
by groodjorb 2y ago
TLDR: Rest arm on table while taking a reading. Don't let your arm hang, unsupported, or flop on your lap. (15th paragraph has the meat of the article).