Flexible Vinyl Liquid Level Gages with Shut-Offs feature a vinyl sight made of clear, heavy-walled plastic that is flexible and shatterproof. These Flexible Vinyl Liquid Level Gages also feature shutoff stems that can be adjusted to stop fluid flow into the gage.  This can be used as a precautionary measure if breakage is a concern.  Should the gage need to be replaced, the plated steel hex nuts unscrew from the front and the gage can be removed without draining the tank.  Once a gage has been placed back onto the bolts and secured with hex nuts, the shut off valves can be opened and the gage will resume normal function.  Centerlines are available from 3" to 60".