Dear All, I have a SWAM-Blaster ...( an Abrasive Jet Maching system from Crystal Mark Inc.) I want to use it in my experiment.... The is a 'Powder Flow adjusment' knob....with scale number from: min,1,2,3,....7,8,9,max I need to know what this numbers mean....I need to know their unit/dimension.... i want to figure out the velocity of abrasive particles which come out from the nozzle... If anyone have the same equipment...or have knowlegde of this thing...please help me... I have email the company, but they have not given me the exact answer... or if any one know any external equipment to measure velocity on small nozzle with dia. less than 1mm... i thought...may be there is some nozzle for this AJM with addtional velocity measuring system attach on it...but i can't find in any company website over the net....but it's only my guessing.... Thank you in advance... -- Agung Shamsuddin S. Micro and Nano Fabrication Lab (#214) School of Mechanical Engineering, Yeungnam University Gyeongsan, South Korea