xtra-long adjuster design, adjusting distance is more than 30mm, wide and thick side holder, comfortable to hold, resistant to distortion, precise adjustment precise measurement: burette in the drip chamber, drops visible 20/60 drops????Ying liquid ... - Update: 2008-04-07

extra-long adjuster design, adjust distance is more than 30mm, wide and thick side holder, comfortable to hold, resistant to distortion, precise adjustment precise measurement: burette within the bucket, drops visible 20 drops????Ying liquid medicin... - Update: 2008-04-07