diff --git a/src/metrology_apis/__init__.py b/src/metrology_apis/__init__.py
index be4d38e..ae99bcc 100644
--- a/src/metrology_apis/__init__.py
+++ b/src/metrology_apis/__init__.py
@@ -36,5 +36,27 @@ def value(self) -> V: ...
     def unit(self) -> U: ...
 
     ### Dunder Methods
-
     def __eq__[B](self: "Quantity[V, U]", other: "Quantity[op.CanEq[V, B], U]", /) -> B: ...
+    def __ne__[B](self: "Quantity[V, U]", other: "Quantity[op.CanEq[V, B], U]", /) -> B: ...
+    def __lt__[B](self: "Quantity[V, U]", other: "Quantity[op.CanOrd[V, B], U]", /) -> B: ...
+    def __le__[B](self: "Quantity[V, U]", other: "Quantity[op.CanOrd[V, B], U]", /) -> B: ...
+    def __gt__[B](self: "Quantity[V, U]", other: "Quantity[op.CanOrd[V, B], U]", /) -> B: ...
+    def __ge__[B](self: "Quantity[V, U]", other: "Quantity[op.CanOrd[V, B], U]", /) -> B: ...
+
+    def __pos__[R](self: "Quantity[op.CanPos[R], U]") -> "Quantity[R, U]": ...
+    def __neg__[R](self: "Quantity[op.CanNeg[R], U]") -> "Quantity[R, U]": ...
+    def __abs__[R](self: "Quantity[op.CanAbs[R], U]") -> "Quantity[R, U]": ...
+
+    def __add__[R](self: "Quantity[V, U]", other: "Quantity[op.CanRAdd[V, R], U", /) -> "Quantity[R, U]": ...
+    def __radd__[R](self: "Quantity[V, U]", other: "Quantity[op.CanAdd[V, R], U]", /) -> "Quantity[R, U]": ...
+    def __sub__[R](self: "Quantity[V, U]", other: "Quantity[op.CanRSub[V, R], U]", /) -> "Quantity[R, U]": ...
+    def __rsub__[R](self: "Quantity[V, U]", other: "Quantity[op.CanSub[V, R], U]", /) -> "Quantity[R, U]": ...
+
+    def __mul__[R](self: "Quantity[V, U]", other: "Quantity[op.CanRMul[V, R], U]", /) -> "Quantity[R, U]": ...
+    def __rmul__[R](self: "Quantity[V, U]", other: "Quantity[op.CanMul[V, R], U]", /) -> "Quantity[R, U]": ...
+    def __truediv__[R](self: "Quantity[V, U]", other: "Quantity[op.CanRTruediv[V, R], U]", /) -> "Quantity[R, U]": ...
+    def __rtruediv__[R](self: "Quantity[V, U]", other: "Quantity[op.CanTruediv[V, R], U]", /) -> "Quantity[R, U]": ...
+
+    def __pow__[R](self: "Quantity[op.CanPow2[int | float, R], U]", other: int | float, /) -> "Quantity[R, U]": ...
+    def __rpow__[R](self: "Quantity[op.CanRPow2[int | float, R], U]", other: int | float, /) -> "Quantity[R, U]": ...
+