Aluminum Alloy Construction: Crafted from high-quality aluminum alloy, this canopy-type velocimetry instrument is designed for durability and reliability in professional settings, ensuring long-lasting performance. Battery Not Included: This professional tachometer does not come with a battery, allowing you to choose the optimal battery type that suits your specific needs and preferences for measuring velocity. Free of High-Concern Chemicals: Ensuring safety and environmental friendliness, this tachometer contains no chemicals of high concern, making it suitable for use in various environments without health risks. Originated from : Proudly manufactured in , this tachometer combines traditional craftsmanship with modern technology to deliver precise and reliable speed measurements for professional use., Manufacturer: Aundhegrtt