Vintage MSA Explosimeter Model 2A Combustible Gas Indicator Part 89220
Vintage MSA Explosimeter Model 2A combustible gas indicator, part number 89220. Manufactured by Mine Safety Appliances Company in Pittsburgh, PA. This classic piece of industrial history includes the original faceplate, dial meter, operating instruction plate, control knob, and heavy-duty leather carry straps. Great physical condition with intact components and hand aspirator bulb. Perfect addition for collectors of vintage industrial testing equipment, mining gear, or historical safety tech. Untested for functionality and sold as-is for display or parts.
The MSA Explosimeter MoThe Batteries Required: The instruction plate on the back explicitly calls for six "carbon-zinc" D batteries rather than modern alkaline versions, which points to a mid-20th-century production era.
Model 2A (Part No. 89220) was first introduced in 1935 by the Mine Safety Appliances Company
Selling as Pictured 081426BS