And what about the gauge? I am currently using the BD 31G X 3/10ml x 5/16 (8MM) syringe with half markings. With that little plastic hood it has you can't really get a good read with calipers at least I can't seem to. Have been using the insulin ruler but really wonder how accurate that is. Was contemplating getting the monoject syringe and use calipers instead. Thought I would throw this question out and see what people are using.