Excellent condition and ready to use Oxygen regulator with flowmeter used for breathing gas analyzation. It has a SCUBA yoke for tank attachment and will meter from 1 to 15 Liters Per Minute. Yokes are$60.00 ea plus shipping or with a DIN fitting and solid stainless steel handwheel rated at 6000psi (reg rated at 3000 only)they are $80.00 plus shipping. I will ship either UPS or USPS for actual charges. USPS money order or Paypal accepted. Thanks and PM or email for any questions and/or photos.