Oil sight glasses by PK Machine clearly reveal changes in machinery lubricant quality to help analyze oil condition.
Machined to precise specifications with optical grade clear acrylic and friction bonded, these 1 ounce water finders have a brass drain valve ¼” NPT.
Each oil sight glass is manufactured from solid material for strength, durability and quality fitting.
They are easy to install directly to the drain port located at the bottom of a reservoir. There are several sizes and valve options.