Vintage MILK TESTERS Patented Mojorrier & WM Sprinkman Milwaukee Wis. Jars.​​

This awesome set includes 2 old milk testing jars, 1 with rubber stopper that says WM Sprinkman corp Milwaukee Wis. The other is Mojonnier Patent no. 57479. They're roughly 6" high & 2" wide at the bottom. NOTE: There is wear on the outside of each bottle from rubbing against each other in the crates they were carried in, back in the day.