This is a curiosity question, not a critique. Why would you have a site glass on a lubester that has a glass cylinder on the pump? Usually the pump is adjusted to dispense exactly one quart so it seems like you would have to dispense more oil for it to travel through the site glass.
Here are the decals as approved by Richfield for their lubesters and some lubesters. If you need more specs for Richfield restorations I have them on a CD.