Allied-TB30 High-Flow Timeter Classic Oxygen Flowmeter With 0-75 LPM Delivery Capacity (1 EA)Allied Medical LLC Timeter Classic High Flow Oxygen Flowmeter The TB30 is a heavy duty flowmeter engineered for high flow oxygen delivery and specialized respiratory procedures. It features a wide body acrylic block that is virtually indestructible and dual silk screened scales to ensure parallax free reading from any angle. The non ferrous construction makes it safe for use in MRI environments, while the glass float design prevents static induced