diff --git a/README.md b/README.md
index 771ec81..0507d6c 100644
--- a/README.md
+++ b/README.md
@@ -33,8 +33,8 @@ for m in get_monitors():
 **Output**:
 
 ```python console
-Monitor(x=3840, y=0, width=3840, height=2160, width_mm=1420, height_mm=800, name='HDMI-0', is_primary=False)
-Monitor(x=0, y=0, width=3840, height=2160, width_mm=708, height_mm=399, name='DP-0', is_primary=True)
+Monitor(x=3840, y=0, width=3840, height=2160, scale=1, width_mm=1420, height_mm=800, ppmm=(2.704225352112676, 2.7), name='HDMI-0', is_primary=False)
+Monitor(x=0, y=0, width=3840, height=2160, scale=1, width_mm=708, height_mm=399, ppmm=(5.423728813559322, 5.413533834586466), name='DP-0', is_primary=True)
 ```
 
 ### Forcing environment
diff --git a/poetry.lock b/poetry.lock
index f9d76f1..b26d452 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -15,10 +15,10 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [package.extras]
-dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "furo", "sphinx", "sphinx-notfound-page", "pre-commit"]
-docs = ["furo", "sphinx", "zope.interface", "sphinx-notfound-page"]
-tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface"]
-tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins"]
+dev = ["coverage[toml] (>=5.0.2)", "furo", "hypothesis", "mypy", "pre-commit", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "six", "sphinx", "sphinx-notfound-page", "zope.interface"]
+docs = ["furo", "sphinx", "sphinx-notfound-page", "zope.interface"]
+tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "mypy", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "six", "zope.interface"]
+tests-no-zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "mypy", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "six"]
 
 [[package]]
 name = "backports.entry-points-selectable"
@@ -32,8 +32,8 @@ python-versions = ">=2.7"
 importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-testing = ["pytest", "pytest-flake8", "pytest-cov", "pytest-black (>=0.3.7)", "pytest-mypy", "pytest-checkdocs (>=2.4)", "pytest-enabler (>=1.0.1)"]
+docs = ["jaraco.packaging (>=8.2)", "rst.linker (>=1.9)", "sphinx"]
+testing = ["pytest", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-flake8", "pytest-mypy"]
 
 [[package]]
 name = "black"
@@ -54,7 +54,7 @@ tomli = ">=0.2.6,<2.0.0"
 typed-ast = {version = ">=1.4.2", markers = "python_version < \"3.8\" and implementation_name == \"cpython\""}
 typing-extensions = [
     {version = ">=3.10.0.0", markers = "python_version < \"3.10\""},
-    {version = "!=3.10.0.1", markers = "python_version >= \"3.10\""},
+    {version = ">=3.10.0.0,<3.10.0.1 || >3.10.0.1", markers = "python_version >= \"3.10\""},
 ]
 
 [package.extras]
@@ -152,9 +152,9 @@ typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
 zipp = ">=0.5"
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+docs = ["jaraco.packaging (>=8.2)", "rst.linker (>=1.9)", "sphinx"]
 perf = ["ipython"]
-testing = ["pytest (>=6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-perf (>=0.9.2)", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
+testing = ["flufl.flake8", "importlib-resources (>=1.3)", "packaging", "pep517", "pyfakefs", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-flake8", "pytest-mypy", "pytest-perf (>=0.9.2)"]
 
 [[package]]
 name = "importlib-resources"
@@ -168,8 +168,8 @@ python-versions = ">=3.6"
 zipp = {version = ">=3.1.0", markers = "python_version < \"3.10\""}
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-testing = ["pytest (>=6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-black (>=0.3.7)", "pytest-mypy"]
+docs = ["jaraco.packaging (>=8.2)", "rst.linker (>=1.9)", "sphinx"]
+testing = ["pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-flake8", "pytest-mypy"]
 
 [[package]]
 name = "iniconfig"
@@ -188,10 +188,10 @@ optional = false
 python-versions = ">=3.6.1,<4.0"
 
 [package.extras]
-pipfile_deprecated_finder = ["pipreqs", "requirementslib"]
-requirements_deprecated_finder = ["pipreqs", "pip-api"]
 colors = ["colorama (>=0.4.3,<0.5.0)"]
+pipfile-deprecated-finder = ["pipreqs", "requirementslib"]
 plugins = ["setuptools"]
+requirements-deprecated-finder = ["pip-api", "pipreqs"]
 
 [[package]]
 name = "mypy-extensions"
@@ -283,7 +283,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "pyobjc-core"
-version = "8.1"
+version = "8.5.1"
 description = "Python<->ObjC Interoperability Module"
 category = "main"
 optional = false
@@ -291,14 +291,26 @@ python-versions = ">=3.6"
 
 [[package]]
 name = "pyobjc-framework-cocoa"
-version = "8.1"
+version = "8.5.1"
 description = "Wrappers for the Cocoa frameworks on macOS"
 category = "main"
 optional = false
 python-versions = ">=3.6"
 
 [package.dependencies]
-pyobjc-core = ">=8.1"
+pyobjc-core = ">=8.5.1"
+
+[[package]]
+name = "pyobjc-framework-quartz"
+version = "8.5.1"
+description = "Wrappers for the Quartz frameworks on macOS"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+pyobjc-core = ">=8.5.1"
+pyobjc-framework-Cocoa = ">=8.5.1"
 
 [[package]]
 name = "pyparsing"
@@ -408,7 +420,7 @@ six = ">=1.9.0,<2"
 
 [package.extras]
 docs = ["proselint (>=0.10.2)", "sphinx (>=3)", "sphinx-argparse (>=0.2.5)", "sphinx-rtd-theme (>=0.4.3)", "towncrier (>=21.3)"]
-testing = ["coverage (>=4)", "coverage-enable-subprocess (>=1)", "flaky (>=3)", "pytest (>=4)", "pytest-env (>=0.6.2)", "pytest-freezegun (>=0.4.1)", "pytest-mock (>=2)", "pytest-randomly (>=1)", "pytest-timeout (>=1)", "packaging (>=20.0)"]
+testing = ["coverage (>=4)", "coverage-enable-subprocess (>=1)", "flaky (>=3)", "packaging (>=20.0)", "pytest (>=4)", "pytest-env (>=0.6.2)", "pytest-freezegun (>=0.4.1)", "pytest-mock (>=2)", "pytest-randomly (>=1)", "pytest-timeout (>=1)"]
 
 [[package]]
 name = "zipp"
@@ -419,13 +431,13 @@ optional = false
 python-versions = ">=3.6"
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy"]
+docs = ["jaraco.packaging (>=8.2)", "rst.linker (>=1.9)", "sphinx"]
+testing = ["func-timeout", "jaraco.itertools", "pytest (>=4.6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-flake8", "pytest-mypy"]
 
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6.2"
-content-hash = "88bb2bfb481c2157bf1e96e1c2250cda7e50ba9d3879cc6d3478dee64e5fe0ca"
+content-hash = "1508e5c9cff4bc02a3d116a7ad634462f2b3d65849ad5acd5b6c870c4bb10f5a"
 
 [metadata.files]
 atomicwrites = [
@@ -562,20 +574,34 @@ py = [
     {file = "py-1.11.0.tar.gz", hash = "sha256:51c75c4126074b472f746a24399ad32f6053d1b34b68d2fa41e558e6f4a98719"},
 ]
 pyobjc-core = [
-    {file = "pyobjc-core-8.1.tar.gz", hash = "sha256:920914a1a4cd4f8a54babe93f0b4e4cd93b51d11ae38d8ef17f5edb603b7a949"},
-    {file = "pyobjc_core-8.1-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:ddd9b964df292fa0bbd0d0694befe4c524977780e3f11221ac7e8683d5e9590f"},
-    {file = "pyobjc_core-8.1-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:b6662805d288cd1bfd257565ddc07541d0162b3167af15e39f7a654b94f6667b"},
-    {file = "pyobjc_core-8.1-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:43f251881fe36dcb9ca9f7946ab13ddb4aa2499bde3c8bf2dc8144b5fe884629"},
-    {file = "pyobjc_core-8.1-cp38-cp38-macosx_11_0_universal2.whl", hash = "sha256:781cfa7a3f72ce7213b4c341b5c552cd63b6664b3b444a23fcb1d5fdd417aa8b"},
-    {file = "pyobjc_core-8.1-cp39-cp39-macosx_10_9_universal2.whl", hash = "sha256:951e716ad30bea52190f5e82604ee2c7f3dc6c04722cf0a3311ad7e4e6af5134"},
+    {file = "pyobjc-core-8.5.1.tar.gz", hash = "sha256:f8592a12de076c27006700c4a46164478564fa33d7da41e7cbdd0a3bf9ddbccf"},
+    {file = "pyobjc_core-8.5.1-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:b62dcf987cc511188fc2aa5b4d3b9fd895361ea4984380463497ce4b0752ddf4"},
+    {file = "pyobjc_core-8.5.1-cp311-cp311-macosx_10_9_universal2.whl", hash = "sha256:0accc653501a655f66c13f149a1d3d30e6cb65824edf852f7960a00c4f930d5b"},
+    {file = "pyobjc_core-8.5.1-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:f82b32affc898e9e5af041c1cecde2c99f2ce160b87df77f678c99f1550a4655"},
+    {file = "pyobjc_core-8.5.1-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:f7b2f6b6f3caeb882c658fe0c7098be2e8b79893d84daa8e636cb3e58a07df00"},
+    {file = "pyobjc_core-8.5.1-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:872c0202c911a5a2f1269261c168e36569f6ddac17e5d854ac19e581726570cc"},
+    {file = "pyobjc_core-8.5.1-cp38-cp38-macosx_11_0_universal2.whl", hash = "sha256:21f92e231a4bae7f2d160d065f5afbf5e859a1e37f29d34ac12592205fc8c108"},
+    {file = "pyobjc_core-8.5.1-cp39-cp39-macosx_10_9_universal2.whl", hash = "sha256:315334dd09781129af6a39641248891c4caa57043901750b0139c6614ce84ec0"},
 ]
 pyobjc-framework-cocoa = [
-    {file = "pyobjc-framework-Cocoa-8.1.tar.gz", hash = "sha256:9de42dc3e0911d6e30cf41bb4baf9aaf2723a27053f7edbd8ad7d758cf41b81d"},
-    {file = "pyobjc_framework_Cocoa-8.1-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:b588a3ed9adcdbfafcbfa77bbd72844afb8d987a70cce7a4f3a35a9474271a11"},
-    {file = "pyobjc_framework_Cocoa-8.1-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:626f6d084a537b365c0786674036643695e7829ebaf7889aa9b327f3b897a800"},
-    {file = "pyobjc_framework_Cocoa-8.1-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:8075f6cf8cac804d9ed05355c68a8a0cd3ce31a310469279c6c7e49dad47b010"},
-    {file = "pyobjc_framework_Cocoa-8.1-cp38-cp38-macosx_11_0_universal2.whl", hash = "sha256:9e47a2709b8458422752efccaa89f4b52cc8e01345ec71c43c713a891f084bb6"},
-    {file = "pyobjc_framework_Cocoa-8.1-cp39-cp39-macosx_10_9_universal2.whl", hash = "sha256:0b0aee74f6c32103338e3735f308052f4cc534c25762130303638aaa6d62d851"},
+    {file = "pyobjc-framework-Cocoa-8.5.1.tar.gz", hash = "sha256:9a3de5cdb4644e85daf53f2ed912ef6c16ea5804a9e65552eafe62c2e139eb8c"},
+    {file = "pyobjc_framework_Cocoa-8.5.1-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:aa572acc2628488a47be8d19f4701fc96fce7377cc4da18316e1e08c3918521a"},
+    {file = "pyobjc_framework_Cocoa-8.5.1-cp311-cp311-macosx_10_9_universal2.whl", hash = "sha256:cb3ae21c8d81b7f02a891088c623cef61bca89bd671eff58c632d2f926b649f3"},
+    {file = "pyobjc_framework_Cocoa-8.5.1-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:88f08f5bd94c66d373d8413c1d08218aff4cff0b586e0cc4249b2284023e7577"},
+    {file = "pyobjc_framework_Cocoa-8.5.1-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:063683b57e4bd88cb0f9631ae65d25ec4eecf427d2fe8d0c578f88da9c896f3f"},
+    {file = "pyobjc_framework_Cocoa-8.5.1-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:8f8806ddfac40620fb27f185d0f8937e69e330617319ecc2eccf6b9c8451bdd1"},
+    {file = "pyobjc_framework_Cocoa-8.5.1-cp38-cp38-macosx_11_0_universal2.whl", hash = "sha256:7733a9a201df9e0cc2a0cf7bf54d76bd7981cba9b599353b243e3e0c9eefec10"},
+    {file = "pyobjc_framework_Cocoa-8.5.1-cp39-cp39-macosx_10_9_universal2.whl", hash = "sha256:f0ab227f99d3e25dd3db73f8cde0999914a5f0dd6a08600349d25f95eaa0da63"},
+]
+pyobjc-framework-quartz = [
+    {file = "pyobjc-framework-Quartz-8.5.1.tar.gz", hash = "sha256:37ba625b6c240d4f5aea02f1672b16e53e39de07dbaf33751a61b5a0be7dc9fa"},
+    {file = "pyobjc_framework_Quartz-8.5.1-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:fe4433be49dafe7efb378bd701583c6ffc93a899e23f1dec743298bc6da5aed6"},
+    {file = "pyobjc_framework_Quartz-8.5.1-cp311-cp311-macosx_10_9_universal2.whl", hash = "sha256:54f30895cd97a08b67dc3cf2cb032a9ebfe8b80458cddab0b32eb903da8fe447"},
+    {file = "pyobjc_framework_Quartz-8.5.1-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:5ee24f34d35da7360ca6c790a93a2b61dd6f74a14efef42344555ad0db4e2f8a"},
+    {file = "pyobjc_framework_Quartz-8.5.1-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:577c912c8d59519a0c5c70b8984406d82f771bca4e399a1f29f224b885012f17"},
+    {file = "pyobjc_framework_Quartz-8.5.1-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:4599337079050512179229625d97c1494ee4821fcbb82b1a209ed498d7e476af"},
+    {file = "pyobjc_framework_Quartz-8.5.1-cp38-cp38-macosx_11_0_universal2.whl", hash = "sha256:9b7c1030fda93695f8c0bbbe03fce3251a351ca392dd6b03f94805d3afaadd16"},
+    {file = "pyobjc_framework_Quartz-8.5.1-cp39-cp39-macosx_10_9_universal2.whl", hash = "sha256:8790fd2499fb1a80d49d8991739e15c5604dba4c8ece87e4afa2f3f679fa0f12"},
 ]
 pyparsing = [
     {file = "pyparsing-3.0.6-py3-none-any.whl", hash = "sha256:04ff808a5b90911829c55c4e26f75fa5ca8a2f5f36aa3a51f68e27033341d3e4"},
@@ -593,6 +619,13 @@ pyyaml = [
     {file = "PyYAML-6.0-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:f84fbc98b019fef2ee9a1cb3ce93e3187a6df0b2538a651bfb890254ba9f90b5"},
     {file = "PyYAML-6.0-cp310-cp310-win32.whl", hash = "sha256:2cd5df3de48857ed0544b34e2d40e9fac445930039f3cfe4bcc592a1f836d513"},
     {file = "PyYAML-6.0-cp310-cp310-win_amd64.whl", hash = "sha256:daf496c58a8c52083df09b80c860005194014c3698698d1a57cbcfa182142a3a"},
+    {file = "PyYAML-6.0-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:d4b0ba9512519522b118090257be113b9468d804b19d63c71dbcf4a48fa32358"},
+    {file = "PyYAML-6.0-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:81957921f441d50af23654aa6c5e5eaf9b06aba7f0a19c18a538dc7ef291c5a1"},
+    {file = "PyYAML-6.0-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:afa17f5bc4d1b10afd4466fd3a44dc0e245382deca5b3c353d8b757f9e3ecb8d"},
+    {file = "PyYAML-6.0-cp311-cp311-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:dbad0e9d368bb989f4515da330b88a057617d16b6a8245084f1b05400f24609f"},
+    {file = "PyYAML-6.0-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:432557aa2c09802be39460360ddffd48156e30721f5e8d917f01d31694216782"},
+    {file = "PyYAML-6.0-cp311-cp311-win32.whl", hash = "sha256:bfaef573a63ba8923503d27530362590ff4f576c626d86a9fed95822a8255fd7"},
+    {file = "PyYAML-6.0-cp311-cp311-win_amd64.whl", hash = "sha256:01b45c0191e6d66c470b6cf1b9531a771a83c1c4208272ead47a3ae4f2f603bf"},
     {file = "PyYAML-6.0-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:897b80890765f037df3403d22bab41627ca8811ae55e9a722fd0392850ec4d86"},
     {file = "PyYAML-6.0-cp36-cp36m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:50602afada6d6cbfad699b0c7bb50d5ccffa7e46a3d738092afddc1f9758427f"},
     {file = "PyYAML-6.0-cp36-cp36m-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:48c346915c114f5fdb3ead70312bd042a953a8ce5c7106d5bfb1a5254e47da92"},
diff --git a/pyproject.toml b/pyproject.toml
index 9dc0fa3..a834046 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ packages = [{ include = "screeninfo" }]
 python = "^3.6.2"
 dataclasses = { version = "*", python = "<3.7" }
 Cython = { version = "*", platform = "darwin" }
-pyobjc-framework-Cocoa = { version = "*", platform = "darwin" }
+pyobjc-framework-Quartz = { version = "*", platform = "darwin" }
 
 [tool.poetry.dev-dependencies]
 pytest = "^6.2.5"
diff --git a/screeninfo/common.py b/screeninfo/common.py
index dfc55e6..0ad357e 100644
--- a/screeninfo/common.py
+++ b/screeninfo/common.py
@@ -11,17 +11,26 @@ class Monitor:
     y: int
     width: int
     height: int
+    scale: float = 1
     width_mm: T.Optional[int] = None
     height_mm: T.Optional[int] = None
     name: T.Optional[str] = None
     is_primary: T.Optional[bool] = None
 
+    @property
+    def ppmm(self) -> T.Optional[T.Tuple[float, float]]:
+        if not self.width_mm or not self.height_mm:
+            return None
+        return (self.width/self.width_mm, self.height/self.height_mm)
+
     def __repr__(self) -> str:
         return (
             f"Monitor("
             f"x={self.x}, y={self.y}, "
             f"width={self.width}, height={self.height}, "
+            f"scale={self.scale}, "
             f"width_mm={self.width_mm}, height_mm={self.height_mm}, "
+            f"ppmm={self.ppmm!r}, "
             f"name={self.name!r}, "
             f"is_primary={self.is_primary}"
             f")"
diff --git a/screeninfo/enumerators/osx.py b/screeninfo/enumerators/osx.py
index 6bde210..8f1f04a 100644
--- a/screeninfo/enumerators/osx.py
+++ b/screeninfo/enumerators/osx.py
@@ -10,7 +10,8 @@ def check_primary(screens: T.Any, screen: T.Any) -> bool:
 
 
 def enumerate_monitors() -> T.Iterable[Monitor]:
-    from AppKit import NSScreen
+    from AppKit import NSScreen, NSDeviceSize
+    from Quartz import CGDisplayScreenSize
 
     screens = NSScreen.screens()
 
@@ -19,10 +20,16 @@ def enumerate_monitors() -> T.Iterable[Monitor]:
         if callable(f):
             f = f()
 
+        description = screen.deviceDescription()
+        width, height = description[NSDeviceSize].sizeValue()
+        width_mm, height_mm = CGDisplayScreenSize(description["NSScreenNumber"])
         yield Monitor(
             x=int(f.origin.x),
             y=int(f.origin.y),
-            width=int(f.size.width),
-            height=int(f.size.height),
+            width=width,
+            height=height,
+            scale=screen.backingScaleFactor(),
+            width_mm=width_mm,
+            height_mm=height_mm,
             is_primary=check_primary(screens, screen),
         )
diff --git a/tests/test_documentation.py b/tests/test_documentation.py
index 1c6ca0d..1af120d 100644
--- a/tests/test_documentation.py
+++ b/tests/test_documentation.py
@@ -38,6 +38,7 @@ def test_documentation(capsys) -> None:
                 y=0,
                 width=3840,
                 height=2160,
+                scale=1,
                 width_mm=1420,
                 height_mm=800,
                 name="HDMI-0",
@@ -48,6 +49,7 @@ def test_documentation(capsys) -> None:
                 y=0,
                 width=3840,
                 height=2160,
+                scale=1,
                 width_mm=708,
                 height_mm=399,
                 name="DP-0",