diff --git a/shimatta_kenkyusho/parts/models.py b/shimatta_kenkyusho/parts/models.py
index 21994b0..075003c 100644
--- a/shimatta_kenkyusho/parts/models.py
+++ b/shimatta_kenkyusho/parts/models.py
@@ -231,10 +231,10 @@ class ComponentParameter(models.Model):
 		if my_type == 'E' or my_type == 'I':
 			# Engineering float number
 			(num, prefix) = NumConv.number_to_engineering(self.value, it_unit=(True if my_type=='I' else False))
-			return f'{num} {prefix}{self.parameter_type.unit}'
+			return f'{num:.3f} {prefix}{self.parameter_type.unit}'
 		elif my_type == 'N':
 			# Standard float number
-			return  f'{self.value} {self.parameter_type.unit}'
+			return  f'{self.value:.3f} {self.parameter_type.unit}'
 		elif my_type == 'F':
 			return self.text_value