For the gauges I like using knurled nuts. Avoids having to use any wrenches
Attachments
C8C280ED-4E65-404C-9574-E9EBCDBECF59.jpeg (149.02 KB, 411 downloads)
AEFD29FA-68AF-4EE8-8130-0CA1D82B605C.jpeg (202.33 KB, 414 downloads)