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GREAT Vintage MSA Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@K!!, US $570 – Picture 0
GREAT Vintage MSA Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@K!!, US $570 – Picture 1
GREAT Vintage MSA Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@K!!, US $570 – Picture 2
GREAT Vintage MSA Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@K!!, US $570 – Picture 3
GREAT Vintage MSA Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@K!!, US $570 – Picture 4
GREAT Vintage MSA Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@K!!, US $570 – Picture 5
GREAT Vintage MSA Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@K!!, US $570 – Picture 0
GREAT Vintage MSA Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@K!!, US $570 – Picture 1
GREAT Vintage MSA Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@K!!, US $570 – Picture 2
GREAT Vintage MSA Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@K!!, US $570 – Picture 3
GREAT Vintage MSA Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@K!!, US $570 – Picture 4
GREAT Vintage MSA Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@K!!, US $570 – Picture 5

Great Vintage Msa Portable Oxygen Indicator!! Mine Safety Appliance Co!! L@@k!!

US $570

  • Goshen, Ohio, United States
  • Mar 6th
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                  Here is a great M-S-A Portable Oxygen Indicator that was manuf. by the Mine Safety Appliances Co. I am guessing that this unit is from the 50's or early 60's because of the address, Pittsburgh 8, Penna. Overall good condition for the age with the exception of needing a good and proper cleaning. There are some small scuff marks and several small scratches from normal use.  There is some cracking on the leather strap. I did take it apart and installed a new battery. The needle does move and the adjustment knobs make the needle move as well. Not sure what else might have been with it or exactly how it works.

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