What unit does my hydrometer show?

My hydrometer shows units I can't conciliate with whatever I read on the internet.

It shows from top to down:

00
10
20
30
40
50

On Internet however,the gravity should be measured in floats of the 1.xxx type.

How should I read this hydrometer?

Topic hydrometer homebrew

Category Mac

1
answered at

The physical quantity of hydrometer reading is Gram/liter.

1
answered at

It might be Brix or Plato, which are basically the same. To test, mix up a 10% solution of sugar: 10 grams sugar in 90 grams water. If the scale is Brix, your solution should read 10 at the calibration temperature. If the units are gravity points, it will read 40.

1
answered at

The scale is sometimes called "Gravity Points" - it's the Specific Gravity value (1.xxx) without the "1." prefix. So, 1.010 is 10, 1.020 is 20,...1.100 is 100 and so on.

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