This is first time in India when we offer Battery Hydrometer to Indian industry. Till date all battery people use are glass type bulb hydrometers which has main drawback is that it's glass material use. We are using acid proof acrylic material to manufacture our cell safe hydrometer. This Battery Hydrometer is useful in any battery industry. Moreover, we assure the timely delivery of this product. Features Unbreakable as made from acid proof acrylic material. First time in India. Dial type indication for very easy reading. Affordable cost to everyone. Long life and lifetime.