TMX412 Multi Gas Monitor with Case TMX412 and SP400 Sampling Pump Meter

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TMX 410 & TMX 412 Multi Gas Monitors with cases.

Industrial Scientific Model TMX412 Multi‑Gas Portable Handheld Monitor

Vintage Industrial Scientific TMX412 Gas Detector Monitor – Non-Working –

INDUSTRIAL SCIENTIFIC TMX412 MULTIGAS MONITOR W/ SP402 SAMPLING PUMP (703)

GASTEC SENSIDYNE Model 800 GAS SAMPLING PUMP WITH CASE

TMX412 MULTI-GAS MONITOR