Analox O2 EII analyzer, bought in 2012 and gently- and infrequently-used since then. Has new battery but definitely needs a new sensor (it's never been replaced, and it's currently reading 0.00). This might be a good deal for someone who already has extra sensors, or can get them more cheaply than me. New analyzers seem to run around $270, and sensors around $130.
Asking $50 + $15 shipping UPS Ground in the lower 48. PayPal only.
Asking $50 + $15 shipping UPS Ground in the lower 48. PayPal only.