select objects within a certain tolerance--which is set in the preferences.

src/bonsai/bonsai/bim/module/drawing/prop.py

@@ -401,6 +401,7 @@ class DocProperties(PropertyGroup):
     drawing_font: StringProperty(default="OpenGost Type B TT.ttf", name="Drawing Font")
     magic_font_scale: bpy.props.FloatProperty(default=0.004118616, name="Font Scale Factor")
     imperial_precision: StringProperty(default="1/32", name="Imperial Precision")
+    tolerance:  bpy.props.FloatProperty(default=0.00001, name="A tolerance used when selecting objects")
 
 
 class BIMCameraProperties(PropertyGroup):

src/bonsai/bonsai/bim/module/search/operator.py

@@ -717,6 +717,15 @@ class SelectSimilar(Operator, tool.Ifc.Operator):
         if key == "PredefinedType":
             key = "predefined_type"
         value = ifcopenshell.util.selector.get_element_value(element, key)
+        tolerance = bpy.context.scene.DocProperties.tolerance
+
+
+        # Determine the number of decimal places based on the magnitude of the rounding value
+        if tolerance < 1:
+            decimal_places = max(0, -int(f"{tolerance:.1e}".split('e')[-1]))  # Exponent in scientific notation
+            formatted_tolerance = f"{tolerance:.{decimal_places}f}"
+        else:
+            formatted_tolerance = f"{tolerance:.1f}"  # For values >= 1, one decimal place is enough
 
         if self.calculate_sum and isinstance(value, (int, float)):
             total = 0
@@ -736,5 +745,14 @@ class SelectSimilar(Operator, tool.Ifc.Operator):
                 element = tool.Ifc.get_entity(obj)
                 if not element:
                     continue
-                if ifcopenshell.util.selector.get_element_value(element, key) == value:
+                obj_value = ifcopenshell.util.selector.get_element_value(element, key)
+                if isinstance(obj_value, (int, float)):
+                    # Check within rounding value
+                    if abs(obj_value - value) <= tolerance:
+                        obj.select_set(True)
+                elif obj_value == value:
                     obj.select_set(True)
+            if isinstance(value, (int, float)):     
+                self.report({"INFO"}, f"Selected all objects that share the same ({key}) value--within a ({formatted_tolerance}) tolerance.")
+            else:
+                self.report({"INFO"}, f"Selected all objects that share the same ({key}) value")

src/bonsai/bonsai/bim/ui.py

@@ -380,7 +380,8 @@ class BIM_ADDON_preferences(bpy.types.AddonPreferences):
         row.prop(context.scene.DocProperties, "magic_font_scale")
         row = self.layout.row()
         row.prop(context.scene.DocProperties, "imperial_precision")
-
+        row = self.layout.row()
+        row.prop(context.scene.DocProperties, "tolerance")
 
 # Scene panel groups
 class BIM_PT_tabs(Panel):