Standard Fitting: 1/4" x 40 TPI thread. Compact Design.
Microcosm M7D Brass Displacement Lubricator-Oil Injector for Steam Engine Models
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M7D New Brass Displacement Lubricator Model Steam Engine 1/4" X 40 TPI Fitting
P12 Brass Displacement Lubricator 1/4"x40 TPI for Live Steam Engine
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M7D Displacement Lubricator 1/4x40 TPI Brass for Steam Engine
