Cardio Meter $3.95 Cardio meter. This plastic meter helps with EKG interpretation and heart rate intervals. Quantity ADD TO CART SKU: PRE31 Add to wishlist You must be logged in to access the wishlist feature. Login or Register Add Cardio Meter to your wishlist Priority Lowest Low Medium High Highest Comments × Add To Wishlist Wishlist Updated Cardio Meter has been added successfully to your wishlist. ×