Sonney (Wilsonn) Orifice Computer: Quickly helps you calculate gas or liquid flow rates across an orifice plate. Comes with easy to learn "How To Book". Review
http://tinyurl.com/kjypaqy
Sonney (Wilsonn) Orifice Computer: Quickly helps you calculate gas or liquid flow rates across an orifice plate. Comes with easy to learn "How To Book".
