Model No.: JB/ABSLM/302Sharp Solid Acrylic body Manometers are fabricated from 1 inch. Thick acrylic plastic solid block, virtually unbreakable stable and free of distortion. PVC plastic engraved scale, zero adjusting knob, and panel mounting holes provided with manometer. Range In mm. Water Guage 0-100 Height In Inches 7 0-200 Height In Inches 11 0-300 Height In Inches 15 0-400 Height In Inches 190-500 Height In Inches 23 0-600 Height In Inches