To check the pressure, you'll need a simple brake-pressure gauge. They're sold by several sources, including Lamb (PN 882) and Wilwood (PN 260-0966).

Wilwood: Pressure gauges are essential to accurate set up and evaluation of the brake system. Pressure gauges are the only tools that can provide accurate analysis of balance bar or proportioning ...

Degree of Difficulty:Time Spent Working:5 hoursTools Needed:Parts Used:Hydratech Braking Systems Level III hydraulic brake assist system 3545SSBC Sure Stop brake pressure gauge kit A1704Wilwood ...

The assist power in current brake systems -- the force that augments the driver’s foot pressure on the brake pedal -- is vacuum provided by the engine and/or a vacuum pump.

They all come with a vacuum pump with a pressure gauge attached and a brake fluid reservoir for used fluid. Additionally, there are vacuum hoses which connect to the bleed screw, ...