MARATHON BA030001 Vertical Outdoor Thermometer - 16-Inch

Easy to install. Gage larger enough to see. I put mine in the shade for accurate measurement. Great price for what I got :)ACCURATE!

easy to read

I got one and liked it so much I got another.PROBLEMS: yesterday I discovered 2 weird and possibly fatal problems with this thermometer.1 - if set in hot water (say 110F) the liquid rises so fast that part of it gets broken off from the rest and leaves little bits behind when the column drops back down. I realized immediately that this would render the thermometer inoperable unless I could merge the disparate sections into one single column. I tried whirling it (centrigual force) to zero effect. I DID get the red liquid all back together after firm thumping onto a hard surface BUT this caused the glass to inch downwards, thus making the calibration seriously inaccurate.Luckily I had the new, same model thermometer to use to move the glass tube upwards so as to calibrate it again.2 - when I compared the new thermometer (same style exactly) I discovered to my shock that the new one was calibrated WAY differently. That is, the gradations from the extremes on the two thermometers (-40F to +120F) were marked on a scale that was about 1" different! The newer device apparently had a larger glass column so the liquid could be seen more easily (slightly broader red line) and so the calibration had to be different.I have to assume the new thermometer reads correctly. But it is weird that the exact same model has two radically different layouts of the markings.

Very easy to read. Happy with product in greenhouse

Order this large thermometer so I could see it from a distance. The hard part is that you have to be directly in front of it to see the red line that shows the temp. Not even almost in front of it. Not recommended.

As someone who's grown tired of the wild inaccuracy of dial and digital thermometers, even after calibrating them more than once, it was nice to find a simple, old-school glass thermometer that came out of the box with dead-on accuracy (checked with a lab-grade laser thermometer) and can be expected to remain accurate/linear across the reasonable temperature range here (about 0-100). It mounted easily on a porch pillar that is perfect for temperature averaging and visible through a sliding glass door. Yes, it has a narrow viewing angle; that's inherent in this style. But I'll take a moment extra to read a temperature I can trust; not much use in being able to see a +/-20 degree temp at a glance. (By the way, you can recalibrate this model of thermometer if needed: carefully remove the glue bead and slide the tube up or down on the holder until it's aligned. Check the adjustment a few times across temp changes, then use a drop of silicone caulk or adhesive to lock the tube in place again.)

Having on my back patio to keep an eye on the temp

The product seems to be okay but it requires someone to be at home and a signature which is ridiculous for a thermometer. It does not contain mercury so that could not be the reason . Will not reorder from this company because of that reason.