Vacuum jar with bell for demonstrating that sound requires air to travel through
Mounted electric bell for generating sound
Grounded bottom flange for ensuring tight seal
Made of acrylic for durability
Measures 25.0 x 14.0cm (H x L)

Technical Details

Size (LWH): 13.9 inches, 8 inches, 7.9 inches
Product Details
Product Dimensions: 13.9 x 8 x 7.9 inches
Shipping Weight: 2.3 pounds (View shipping rates and policies)
ASIN : B00ARJP1EO