diff --git a/Python-with-Office-Video_Covers.pptx b/Python-with-Office-Video_Covers.pptx
index d2118ad..07f4a57 100644
Binary files a/Python-with-Office-Video_Covers.pptx and b/Python-with-Office-Video_Covers.pptx differ
diff --git a/img/062.png b/img/062.png
new file mode 100644
index 0000000..4b3ca15
Binary files /dev/null and b/img/062.png differ
diff --git a/img/063.png b/img/063.png
new file mode 100644
index 0000000..045e5ec
Binary files /dev/null and b/img/063.png differ
diff --git a/part2_Use-Python-in-Office/ch08_work-with-PPT/8-3_unit-of-length/8-3-2_unit-conversion.py b/part2_Use-Python-in-Office/ch08_work-with-PPT/8-3_unit-of-length/8-3-2_unit-conversion.py
new file mode 100644
index 0000000..f4c16c3
--- /dev/null
+++ b/part2_Use-Python-in-Office/ch08_work-with-PPT/8-3_unit-of-length/8-3-2_unit-conversion.py
@@ -0,0 +1,17 @@
+from pptx.util import Inches
+
+length = Inches(1)
+
+print(length)
+
+print(length.emu)
+
+print(length.inches)
+
+print(length.cm)
+
+print(length.mm)
+
+print(length.pt)
+
+print(length.centipoints)
\ No newline at end of file