Steel Tuning Fork Pair with Wood Bases, 440Hz (One Adjustable) Subject_Botany and laboratory procedures

and laboratory procedures

Hand-painted 4-part human brain model separates into cortical hemispheres and brain-stem regions for lobed-anatomy teaching at introductory biology levels

Wear-replacement timer switch for the goggle sanitizer cabinet

5-inch compact and 6-inch long-format units

and twelve 50g slotted weights for vector-addition work

Steel Tuning Fork Pair with Wood Bases, 440Hz (One Adjustable) Subject_Botany and laboratory proceduresAdjustable mass on one fork shifts its 440Hz pitch by a few hertz, producing audible beats when sounded against its fixed frequency partner on the matching wooden resonance base.