Jar sized Hygrometer/Thermometer

Cold$moke said:

Now that you metion it both but the jar is first lol.

Dont care how humid they are once they are full of glass

Click to expand...

yup, that has to suck.

even worse than dropping your tray of cleaned weed on shag carpet

yeah, i'm old, lol...

Sour Wreck said:

yup, that has to suck.

even worse than dropping your tray of cleaned weed on shag carpet

yeah, i'm old, lol...

Click to expand...

Was it green or orange. Lol

charface said:

Was it green or orange. Lol

Click to expand...

damn, i wish i would have been cool enough for the orange. weed would have been so much easier to pick up

I know the first time i made dry ice keif
I didnt think that powder would fly all over lol

Cold$moke said:

I know the first time i made dry ice keif
I didnt think that powder would fly all over lol

Click to expand...

lol, yes it will...

So convenient though not having wet weed to deal with lol not to mention less chlorophyll

BAM !!!!!!




my dremel skills need some practice, lol...

I going to try something like that ^
My China made mini meter doesn't have flanges for a nice fit like yours, but me and my dremel tool will think of something.
I'll go to Walmart and buy a plastic top for my jar.

Nah looks great just knock those burrs off and it will lay more flush

Did you glue it in yet

Cold$moke said:

Nah looks great just knock those burrs off and it will lay more flush

Did you glue it in yet

Click to expand...

yea, i missed a few burrs in my rapid cleanup.

did not glue it in yet. can't be airtight, but it is a tight fit.

i'll check it later to see if the humidity is holding

Sour Wreck said:

yea, i missed a few burrs in my rapid cleanup.

did not glue it in yet. can't be airtight, but it is a tight fit.

i'll check it later to see if the humidity is holding

Click to expand...

I just made a jar lid with mini meter like yours. Took me all of 5 minutes with my Dremel tool. The fit was tight enough that it should be air tight, but I might glue it in just to make sure. Thanks for the great suggestion. P.S. I put a packet of 55% in the empty jar and will see how close it comes to that. With my mini meter, it can take up to 3 hours to come to a final reading.

grassy007 said:

I just made a jar lid with mini meter like yours. Took me all of 5 minutes with my Dremel tool. The fit was tight enough that it should be air tight, but I might glue it in just to make sure. Thanks for the great suggestion.

Click to expand...

awesome, but the credit for the idea really belongs to @charface

agree, i have not glued mine and humidity is holding fine. will watch it over the next few days.

already ordered some more meters

grassy007 said:

I just made a jar lid with mini meter like yours. Took me all of 5 minutes with my Dremel tool. The fit was tight enough that it should be air tight, but I might glue it in just to make sure. Thanks for the great suggestion. P.S. I put a packet of 55% in the empty jar and will see how close it comes to that. With my mini meter, it can take up to 3 hours to come to a final reading.

Click to expand...

plastic lid?

I wish it were my idea, others here and im sure elsewhere have already done it.
So thank you, whoever you are. Lol

Cigar humidors have them why not weed
Im suprised they arent already for sale . lol

Walmart has 6 packs of plastic mason jar lids (with threads) in store for $2.45. I have 3 China bought mini hygrometers that cost me only $5.10 free shipping for all 3. They all compared within 1% of my Accurite hygrometer. Took 5 weeks to arrive from China tho. These only read Celcius, which is no big deal. They have a slight flange which makes it fit nicley on the top of the cutout lid. I'm evaluating how accurate it is. I have a pack of Boost 55% inside the jar, and so far the top meter reads 45% while the inside mini reader already reads 48%. So, I'm still in the evaluation process. I'll give it overnight. It might end up being the meter inside reads more accurately than the meter stuck into the lid.

Stay tuned. This method of inexpensive mini hygrometers inserted into the lid of a mason jar to read jar humidity may not be accurate. My mini hygrometer reading inside an empty jar of a fresh Integra 55% packet is getting closer to 55% humidity (48% now), while the lid hygrometer is behind in coming up on humidity reading (45%). I'm suggesting that micro type hygrometers may only read accurately when they're placed inside the jar. The fit is airtight.

Heh. Just to make sure , I placed some Saran wrap over the jar and a rubber band to see if that changes things.

Or they are just not calibrated in sync?

Would be hard to believe cheap meters are all calibratex the same but i could be very wrong
Hmmm
Now im getting the wheels turning

My gauges were a bit off.
I calibrated against my digital then wrote +2 for on the face of the one that was off by two.

Ill have to test like you did once they are together and hopefully if they are off I can just update my calibration mark

Cold$moke said:

Or they are just not calibrated in sync?

Click to expand...

These are hygrometers that cost $1.10 ea. Free shipping.
(All 3 read well within reason in my tent, when next to my more expensive Accurite hygrometer nearby).

Who knows? So far, all these dollar hygrometers are still suspect to me. China makes millions of them. All 3 read within reason of each other (in my grow tent along side a more accurate hygrometer), but not so much now with the meter in lid thing. Still evaluating.