This refractometer is for measuring the sugar content of beer and includes an automatic temperature compensation of 10 - 30 degree Celsius. This refractometer can replace your hydrometer for easier and more accurate measurements. Simply use the dropper to take a sample of wort and put it on the prism. Then hold the refractometer up to the light and look through the eyepiece. Due to the dual scale there is no need convert to specific gravity as the scale measures both Brix and SG. PLEASE BE ADVISED THAT THIS REFRACTOMETER IS FOR UNFERMENTED WORT OR MUST. ONCE FERMENTATION BEGINS, THE REFRACTOMETERS READINGS WILL BE INACCURATE! DUAL SCALE Brix Wort SG Scales in a GRAY CASE! Many in stock! BRAND NEW! Ships ASAP within 24 hours, usually less! Don't fall for the Bait-and-Switch from the other guys! Agriculture Solutions LLC - Dual range refractometer measures the Brix and Specific Gravity of your Wort or wine. A refractometer is easier and more accurate than a hydrometer for measuring sugars. Features ATC (Automatic Temperature Compensation) for accurate readings. Measures Brix: 0-32% and Specific Gravity:1.000-1.120 1 Year warranty with Agriculture Solutions LLC - Do Not Buy From XiTech, they are selling single scales with no warranty with us! International Shipping: Shipping will be via US Postal's Air Mail/Global Priority (3-8 business days) is $15.00 ($12.00 to Canada) . There can be Customs delays, and there aren't any Tracking Numbers. WE ARE NOT RESPONSIBLE FOR CUSTOMS DELAYS OR LOST PACKAGES! We get the packages to the shipper, they ship it to you. Don't worry! They do have wonderful service and assist in reducing your import taxes. Buy more items, for a total of 2 portable refractometers, and the shipping charge is still just $15.00 (world)/$12.00 (Canada) via the Air Mail/Global Priority! Of course, you'll have to win this auction to get the first item! Air Mail/Global Priority: World: $15.00 Canada: $12.00 For an additional $15.00 you can upgrade to USPS Express Mail (which takes 3-5 business days) and includes Shipping Insurance to $100.00, Delivery Confirmation and a Tracking Number. National Industrial Supply 30777 Rancho California #891420 Temecula, CA 92591, USA Sales: 951.308.9269 Fax: 310.833.7306 Email: nisupply@gmail.com We prefer Paypal! Pay me securely with any major credit card through PayPal!