Final Gravity Hydrometer

Final Gravity Hydrometer

Item currently out of stock

Take the guesswork out of measuring your final gravity.

Precisely read the finishing gravities in your homemade beer with this narrow-range, highly accurate hydrometer. The scale range is only .990-1.020, but the individual gradients are extra large making it easy to read. 

Item # MT315
Shipping Eligible for Free Shipping Program
Availability Out Of Stock
Weight 0.12 LBS
Community Q&A

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Why did you choose this?
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My husband told me to
Sarah P on Dec 7, 2022
need more accuracy
Benjamin B on Oct 17, 2022
My husband told me to
Sarah P on Dec 7, 2022
Know exactly when and where beers finish
Joseph Odden on Nov 14, 2022
need more accuracy
Benjamin B on Oct 17, 2022
More precise gravity readings
Grayson D M on Oct 4, 2022
For more accuracy then the standard hydrometer
Derrick Altland on Mar 18, 2022
Easier to read FG than my older hydrometer.
Chris C. on Mar 16, 2022
This is a must have item for checking final gravity
EDWARD C on Nov 9, 2021
Easy to see graduation
Joe Y on Oct 8, 2020
More accurate for final gravity
Ethan C on Sep 15, 2020
To stop fermentation with the right residual sugar.
Les H on Sep 3, 2020
Wanted more accuracy on fg
Valued C on Aug 7, 2020
Better range
Valued C on Jul 16, 2020
Finer resolution readings and less squinting for FG
Terry Saunders on Jun 24, 2020
I'm blind as a bat
Edward P Petroski I on Jun 18, 2020
easier to read FG
Rob S on May 23, 2020
Upgrade gear
John K. on May 12, 2020
I needs to know.
Brian Higgins on Apr 9, 2020
I got mad that my filter “package” didn’t come with a mounting brackett and through my hydrometer against the wall. !! J/k
brandon m on Mar 6, 2020
I don’t have one yet for final gravity
Aleeta Dene on Nov 30, 2019
Kelly S on Nov 30, 2019
Interested in reaching exact carbonation when bottling
MARTIN MOZETIC - E on Nov 28, 2019
Home brewing
Larry M on Sep 26, 2019
Ran out of fishing bobbers
Dane Jack on Aug 28, 2019
Hard to find item, that is very useful
Ted P on Jul 16, 2019
I like the smaller scale on the FG hydrometer. I am hoping that this device will improve the accuracy of my FG readings.
Ryan B on Jul 8, 2019
more accuracy
Vernon L on May 31, 2019
Because I feel like breaking another one of these. But my old eyes can't read the final gravity well on the standard hydrometer
Glenn H on May 16, 2019
The previous one I had snapped on the long skinny tube, and I like the easier to read scale
Randy B on Mar 18, 2019
Fine tuning my brewing
Christopher W on Feb 21, 2019
Easier to read than OG hydrometer
Dwain Pannell on Feb 2, 2019
hard to read main hydrometer (OG is ok)
Valued C on Jan 23, 2019
Because I need it.
Charles E on Jan 16, 2019
Jeanine A on Nov 24, 2018
easy to see
Eric Landrum on Oct 19, 2018
I am developing a house yeast, and I need to ensure accurate FG.
Evan R on Sep 19, 2018
I had one before and loved it. However, it broke in transport.
Einar M on Jul 10, 2018
Get more accurate final gravity measurements.
Michael Hoccom on May 24, 2018
had it before, works
Glenn H on May 5, 2018
because it's cool and accurate!
Scott H on Mar 31, 2018
easier to read
Phil on Mar 27, 2018
More accurate FG readings
Jim R on Mar 20, 2018
Love the ease of FG reading - and my other one broke!
Paul Galardy on Feb 28, 2018
Added accuracy for FG
mark gray on Feb 20, 2018
sour beer
edgar c on Feb 7, 2018
Perfect to read final gravity.
Justin L. on Jan 30, 2018
Know exactly when and where beers finish
Joseph Odden on Nov 14, 2022
More precise gravity readings
Grayson D M on Oct 4, 2022
This hydrometer did not come with a temperature guide. I was wondering what the temperature of the liquid should be at?
Steven Grant on Mar 6, 2018
BEST ANSWER: The paper scale in this hydrometer says 15.6° C and 60° F.
What is the length and diameter of this product? I'm wanting to know so that I may choose an appropriately sized jar.
Dkobs on Aug 18, 2022
BEST ANSWER: The final gravity hydrometer is 29.5 cm (11 5/8 in.) long and the bottom bulb is 19 mm (3/4 in.) diameter. The glass tube where you read gravity is only 4 mm diameter (compared to 7 mm for my triple scale hydrometer) so it is fragile but the scale is 4 times larger making it very accurate for final readings.
What is the calibration temperature of this hydrometer? Is it 60F or 68F? The MoreBeer online tool only mentions the Triple Scale Hydrometer, not the Final Gravity Hydrometer.
Roderick on Jul 28, 2020
BEST ANSWER: I have purchased the Final Gravity Hydrometer and mine is cal @ 60. They are very fragile.

4.3 / 5.0
54 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Works well if you are looking for more accuracy on FG. Comes with a protective tube to help stabilize the top when storing.
User submitted image
Added Apr 10, 2022
April 10, 2022
1 year ago
Rated 5 out of 5
Easy to read
Love it, so easy to read especially in low light
February 28, 2022
1 year ago
Rated 1 out of 5
I may have ordered the wrong hydrometer. Just brewed a batch of beer that said estimated original gravity should be 1.066-1.070. This hydrometer only goes to 1.020. Maybe this one is not designed for beer?
User submitted image
User submitted image
February 17, 2022
1 year ago
Rated 5 out of 5
Works great
Much easier to get an accurate final gravity reading
November 19, 2021
1 year ago
Rated 5 out of 5
Good hydrometer, needed a replacement, I broke the last one....
February 19, 2021
over 5 years ago
Rated 5 out of 5
Good, but delicate
There is plenty of room between numbers for accurate final gravity readings. No more worrying about the meniscus and guessing between a few points. Still, as others have mentioned, it is really delicate. The stem is so thin, I would not pick it up that way, and definitely wouldn't hold it by the stem at any sort of angle. Still, if you're careful it should give you good service, and the lack of guesswork will make it worth the investment.
September 7, 2020
over 2 years ago
Rated 5 out of 5
great for FG readings
August 21, 2020
over 2 years ago
Rated 5 out of 5
Great resolution
I love this hydrometer. It has so much better resolution. Only worried about how thin the top is (handle with care or it could break).
July 31, 2020
over 2 years ago
Rated 3 out of 5
Doesn't come with graduated cylinder
I would rate this 5 stars if it came with its own graduated cylinder.I tried using the one from my regular hydrometer, but this final gravity hydrometer is slightly wider and sticks to the sides of the cylinder. For $22 bucks it should include it's own plastic cylinder.
July 8, 2020
over 3 years ago
Rated 5 out of 5
Works as intended. Replaced a broken hydrometer
March 23, 2020
over 3 years ago