This category contains specially configured vented brass gages.  Common adaptations include alternate caps, alternate bases and liquid level markings.
Items
YB4445-6 Vented Brass Gage Special

Vented Long Elbow Brass Liquid Level Gage with Bottom Drain, 5 21/32” Sight Opening, 5/8” Diameter Glass, 1/2” Male NPT Mounting Thread

B1357-8B4

Vented Union Coupling Brass Elbow Gage with 1/4” Male NPT Cap, 2 1/32” Sight Opening, 1/2” Diameter Glass, 1/4” Male NPTF Mounting Thread

YB4492-1

Vented Union Coupling Brass Elbow Gage with Hot/Cold Level Markings, 1/4” Female NPT Cap, 4 17/32” Sight Opening, 1/2” Diameter Glass, 1/4” Male NPTF Mounting Thread

B1144-18B3

Vented Straight Brass Gage with 1/4” Female NPT Cap, 3 17/32” Sight Opening, 1/2” Diameter Glass, 3/8” Male NPT Mounting Thread

B2579-3B5

Vented Brass Elbow Gage with Female Inlet, 4 13/32” Sight Opening, 5/8” Diameter Glass, 1/2” Female NPT Mounting Thread, 1/4" OD Tube Connection in Cap
Sight Opening N/A 5 21/32" N/A 2 1/32" N/A 4 17/32 N/A 3 17/32 N/A 4 13/32"
Height from Center of Mounting Hole N/A 6 3/4" N/A 3 3/16" N/A 5 21/32 N/A 6" N/A Approximately 6 1/4"
Mounting Thread N/A 1/2" Male NPT N/A 1/4" Male NPTF N/A 1/4" Male NPTF N/A 3/8" Male NPT N/A 1/2" Female NPT
Glass Diameter N/A 5/8" dia N/A 1/2" dia N/A 1/2" dia N/A 1/2" dia N/A 5/8" dia
Feature N/A Long Elbow, Bottom Drain N/A Union Coupling, 1/4" Male NPT Cap N/A 1/4" Female NPT Cap, Hot/Cold Level Markings, Viton Seals N/A 1/4" Female NPT Cap N/A 1/4" OD Tube Connection Cap
Body Material N/A Brass