NEW ADOX STAINLESS THERMOMETER WITH FLUORESCENT INDICATOR

[pentaxuser]

I use a cheap oven/meat thermometer most of the time for color work.

I did the same but got rid of it after the wife chased me round the garden trying to take my temperature by sticking it into my breast bone

pentaxuser

 

[koraks]

Was she also shouting loudly "are you done yet!!!!"?

 

[runswithsizzers]

I notice on the Fotoimpex page it says:
"Precision: 1% (equals +/- 0,2° at 38°) when immersed at least 15 cm deep in liquid"

Most of the 500 mL containers which I use to develop film are less than 15 cm deep. Likewise, it might be difficult to get 15 cm of immersion in a darkroom tray for paper development unless you drop the thermometer, dial and all, into the tray?

It looks like a fine thermometer, and I'd like to have one. But users should be aware of the fine print when using any thermometer.

As for calibration, a local university darkroom has about a dozen dial-type thermometers. I put them all in a liter of 20*C water to see how they compared. As I recall there was a several degree difference between the highest and the lowest. Keep in mind these had been used by students for some time, so possibly not handled with the greatest of care.

I bought my own dial type thermometer (a Samigon), which I calibrated against a digital thermometer. It is easy to change the calibration of the dial-type by holding a nut with a wrench and rotating the dial. My digital thermometer -- a ThermoWorks ThermoPop2 -- is specified to be accurate ±1.0°F (±0.5°C) from 14 to 208°F (–10 to 98°C), and is NIST-traceable. According to ThermoWorks, I can get an accurate reading with only about 0.25-inch (6.4 mm) immersed in a solution.

The worst things about the digital are: it keeps turning itself off to save the battery, and it is not that quick or easy to switch the readout between Centigrade to Fahrenheit. The dial thermometer is always on, and I can read either C or F at a glance.

 

[Harry Callahan]

Depends a bit on what you're after. The requirement for precision is overstated in the majority of cases if I look at the expectations and requirements of the vast majority of amateur photographers.

Yes, let`s say color means more precision.

 

[halfaman]

This is a food thermometer meant to check temperature inside meat or bakery. I used one from my parent's house for a while when I broke my alcohol precision thermometer. Nothing fancy, the needle moves in 1° C increments with no intermediate positions. More than enough to check that your steak is cooked medium rare, but I expect better precision in the readings even they are not super accurate.

 

[runswithsizzers]

Nothing fancy, the needle moves in 1° C increments with no intermediate positions.

The Centigrade scale has intermediate markings for half degrees.

 

[halfaman]

The Centigrade scale has intermediate markings for half degrees.

Didn't notice it. With half degree marks this is better than the usual food thermometer.

 

[Harry Callahan]

I notice on the Fotoimpex page it says:
"Precision: 1% (equals +/- 0,2° at 38°) when immersed at least 15 cm deep in liquid"

Most of the 500 mL containers which I use to develop film are less than 15 cm deep. Likewise, it might be difficult to get 15 cm of immersion in a darkroom tray for paper development unless you drop the thermometer, dial and all, into the tray?

...

Hm, that's a problem... maybe if you bend it? (joke)

As you should have the developing tank in a water bath when doing color, it may be suitable to check the temperature of the water bath. And for B/W you don`t need precision of +/-0.2° all the time...

 

[khh]

I bought a cheap digital medical thermometer at a pharmacy to use for color. They're designed to measure temperatures accurately in the 36-41 °C range. They do point measurements, though, not continous.