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> Removing Thermometer bubbles |
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#11
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Quote:
The word 'pharmacist' caught my eye. I wonder if the advice not to finger the bulb relates to medical thermometers that will be placed in the patient's mouth? Would make some sense in that context, but puzzling advice in photography. |
#12
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Always stored my thermometers upright in a coffee jar half full of rice, never had a problem with separation or bubbles.
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"Tea is surely the king of all drinks. It helps against the cold, it helps against the heat,against discomfort and sickness, against weariness and weakness". Heinrich Harrer. |
#13
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Mercury Thermometers
I am hanging onto my last mercury thermometer for grim life because I know it is 100% accurate and always will be. (or as the advertising blurb said before I bought it accurate to within +/- .25 of a degree)
They never go out of calibration unless like some that get a bubble of air in the mercury column. (Yes I do store mine vertically that is the only way I can be reasonably sure it remains intact) This one must be at least 30, possibly even 40 years old and I use it only for film developing which is done in the utility room so there is no problem with seeing the column. I also have an electronic digital one which is for use in the darkroom and that compares almost exactly with the Mercury one. That is accurate enough for print developing both colour and B&W. |
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