Review on BM2011AS Aluminum Division Immersion Thermometer: Accurate Temperature Measurement in Every Dive! by Eric Williamson

Fits my purpose of having a small and inexpensive thermometer with a protective cover. The only potential problem (for some) is that the actual photo is incorrect. The product I received has a sleeve that completely covers the tube and the sleeve has to be completely removed to read it. Similar to here: https://www.amazon.com/gp/aw/d/B00DYC7DQ0/ref=psd_mlt_nbc_B00BQOCM3M_pi