The Brake Trolley is connected to the wagon or coach using extra-long brake pipes, one for the brake pipe [BP] the red one, and the other for the main reservoir pipe [MRP], normally yellow and on 'two piped' vehicles only.
Westinghouse Railroad Air Brake Test Gauge – Ashcroft – Brass – 6" – 160 PSI
Vintage Test Gage The Ashton Valve Co with New York Air Brake initials
Brawa H0 710 Signal Brake Test Signal Brake Test Signal *NEW* E298
2115 - AIR PRESSURE TEST GUAGE 0-1000lbs 1/4 Gas Thread Loco
Quest Railroad Conductor Air Break Test Gauge Meg Trans Corp, Pressure Tester
***VINTAGE 1931 ERIE RAILROAD AIR BRAKE, AIR SIGNAL & HEAT SYSTEMS RULE BOOK***
