Door Pressure Gauge

[Zach Adams]

Hey all, this is a weird one, but does anyone know where I can borrow one of these (I don't think they have them at the DC Tool Library)? My building had our front door replaced and our door builder is absolutely dragging their feet after installing a closer I think is inadequate (or inadequately adjusted). I want to measure it empirically and find out.

Thanks,

Zach