Brass Replica Mark IV Diving Helmet Bookend Pair - Stained Wooden Bases, Functional & Decorative Nautical Marine Memorabilia (5.7" L × 4" W × 6.7" H) Photocells (2)

Photocells (2)

Measures the forward current gain of NPN and PNP transistors

and has one side with double-cut American pattern teeth and one side with single-cut American pattern teeth for smoothing and shaping straight surfaces

Standing an impressive 33

Science education projects include a broad range of activities

Brass Replica Mark IV Diving Helmet Bookend Pair - Stained Wooden Bases, Functional & Decorative Nautical Marine Memorabilia (5.7" L × 4" W × 6.7" H) Photocells (2)This pair of eye catching bookends feature miniature replica 1941 U. S. Navy Mark IV diving helmets are made of Brass and fixed to beautiful stained Mango wood stands Each bookend measures 5. 7" Long 4" Wide 6. 7" Tall and weighs 1. 3 pounds. The mini helmets are 3. 5" tall. The bookends feature a felt coated base which prevents them from scraping surfaces, and reduces noise when moving them The mini diving helmets have a lovely gold color and are