12-Piece Steel Extension Spring Set, 6-9" Material_Glass this 40-piece optical bench kit

this 40-piece optical bench kit pairs an aluminum track and sliding holders with lamp

Jolly bulb is 60mm diameter and is directly connected to a bourdon gauge

Largest metal displacement vessel in the series at 225 by 125mm with a side spout

with a 6cm cylinder extending to 16cm overall for suspending submerged specimens in the bucket

blue and the secondaries green

12-Piece Steel Extension Spring Set, 6-9" Material_Glass this 40-piece optical bench kitTwelve spring steel extension set paired across six size combinations with looped ends, offering a spread of spring constants for simultaneous comparison in oscillation and Hooke's Law experiments.