RGB/CMY Mounted Color Filter Set, 50 x 50mm, 6-Piece Racks & Stands_Flask Stands holding under at least 100

holding under at least 100 Newtons of separation force after hand-evacuation of the air between them

this metal wave apparatus pairs the rotary handle with a degree scale so students can read phase against vertical displacement

the flywheel light enough to drive by breath for hands-on reciprocating-engine study

these plastic forceps provide precision grip for specimen manipulation without damaging delicate tissues or structures

Polished beech wood test tube rack with twelve vertical holes sized for tubes up to 28 mm diameter

RGB/CMY Mounted Color Filter Set, 50 x 50mm, 6-Piece Racks & Stands_Flask Stands holding under at least 100Three primaries (red, blue, green) and three secondaries (cyan, magenta, yellow) sit in 50 x 50mm mounts, supporting both additive and subtractive color demonstrations in optical box setups.