Specification Brand : Tomotato BulletPoint1 : VIOLIN CASE HYGROMETER: This hygrometer is used to measure the humidity of violin, guitar, and other musical instruments, providing a good storage environment for the instruments. BulletPoint2 : SOLID CONSTRUCTION: This violin humidity meter is use of excellent alloy material, which has high hardness, good wear resistance, scratch resistance, and long service life. BulletPoint3 : CONVENIENT TO USE: Simply place the round hygrometer in a violin storage bag or case to display the humidity at a certain moment, without the need for batteries or other tools. BulletPoint4 : COMPACT SIZE: This guitar violin hygrometer has a small size and light weight, which is easy to carry and store, making it convenient for you to use anytime, anywhere. BulletPoint5 : MINIMALIST DESIGN: This violin hygrometer features a pointer and dial design, which is simple and beautiful, making it perfect for professional violin players and enthusiasts. ExternallyAssignedProductIdentifier : 7635770076523 IncludedComponents : inc ItemName : Violin Case Hygrometer Round Alloy Mini Guitar Humidity Gauge Guitar Analog Hygrometer for Musical Instruments Care ItemPackageQuantity : 1 ItemTypeKeyword : humidifier-accessories Manufacturer : Tomotato Material : Material PartNumber : Tomotatoc92mf0x7hi ProductDescription : Specification: Item Type: Violin Hygrometer Material: Alloy Diameter: Approx. 38mm / 1.5in Thickness: Approx. 9.4mm / 0.37in Application: Measure humidity for violin, guitar and other instruments