Thanks for replies to my question. My pump is this. Opinions?

I have a question about the gauge reading (I had never used a gauge before): When I push the handle to pump, the gauge hand goes up to, say, 55~60 psi, then when I stop pushing and start pulling the handle to draw air, the reading immediately "collapses" back to 40 psi or lower. Is this what it's supposed to be like? Is the highest reading (the 55~60, which only stays for as long as my hand holds down the handle with force) the one that counts?

(Trying to add to my set of dummy questions )