Tap My Trees VT State Tested Maple Syrup Hydrometer Vermont State tested and approved Maple Syrup Hydrometer for making maple syrup. 9.5" syrup hydrometer with Baum and Brix scale. Instructions included. Secure packaging to ensure safe shipping and storage after delivery. Recommended for use with stainless steel hydrometer test cup with dimensions of 8" tall X 1" diameter. Collecting maple sap is a green, environmentally sustainable process that can be enjoyed by anyone with a healthy, mature maple tree.