Amazon.com: Graduated Cylinder, 25ml - Class A Tolerance ±0.25ml - Round Base - Blue Graduations - Borosilicate 3.3 Glass - Eisco Labs : Industrial & Scientific
Compressed air cylinder (0.25 l – carbon – 300 bar) – Steambow GmbH
Cross Cylinder +/- 0.25 - Bondeye Optical
High Pressure Aluminum Gas Cylinder 0.25 0.3 0.35 0.45 0.5 Litre Diving Tank Capacity M18X1.5 300bar - China CO2 Cylinder, Gas Cylinder | Made-in-China.com