 #BHC. Hydrometer Cup Backyarder 1 1/2" 1 1/2" diameter Backyarder Hydrometer Cup 304 SS Welded. Great for the backyarder - only a small amount of syrup needed to take hydrometer readings. Compatible with 9" syrup hydrometer and 7" sap hydrometer. $30.00 |  #HC. Hydrometer Cup Standard 2" Standard 2" diameter Hydrometer Cup 304 SS Welded $35.00 |  #HC12. Hydrometer Cup Tall 2" Tall (12 inch) 2" diameter Hydrometer Cup 304 SS Welded. These cups are made upon order - Please allow up to a week extra delivery time. $40.00 |