Check the listing for details. ATAGO Official Site Hand Held Refractometer MASTER-20M. Condition: New. Listed at 170.00 USD. MASTER-20M is for low concentration such as juices and cutting oil etc.and is a good alternative choice when the water resistant feature is not a priority and the Temperature Compensation will be carried out manually. Not equipped with the Automatic Temperature Compensation feature.The MASTER-20M is made of metal, and the MASTER-20PM is plastic. The specifications are exactly the same. For salty and acidic samples, choose the plastic body, MASTER-20PM. For the model with Automatic Temperature Compensation please choose MASTER-20α.SpecificationsModelMASTER-20MCat.No.2383RangeBrix : 0.0 to 20.0%Minimum Scale0.1%Accuracy±0.2%Greeting! Thank you for visiting ATAGO official site. We are a leading company of Refractometers since 1940s in JAPAN. We have established our reputation as a trusted brand and enjoys the fullest confidence of end-users not only in Japan but also in 154 countries worldwide. We guarantee...Proudly Made in Japan ProductsFactory Direct Speedy DeliveryQualityDurabilityCustomer SatisfactionGood packing Payment: Paypal OnlyShipment: FedexEstimated Delivery time: 1-2weeks Please feel free to ask any questions. We are available from 9:00-17:30 in Japan time