a metering rod assembly including a body for accommodating a metering rod insert and configured to clamp the metering rod and / or metering rod insert without the use of an auxiliary clamping device , such as a pressure tube or the like . a rod bed insert is supported in a tapered channel of a body whereby a clamping action is created during use . in another embodiment , the body includes a hinge portion that facilitates relative rotation between upper and lower jaws to create a clamping action during use .