New PHP hand pumps generate up to 600 psi (40 bar) of pneumatic pressure, depending on the model. They produce pressure and vacuum with a spring-loaded grip handle and scissors action. Available in three sizes, the pumps include a fine-adjustment vernier and spring-loaded locknut stroke adjustment.E Instruments, 172 Middletown Blvd., Suite B201, Langhorne, PA 19047, (215) 750-1212, www.E-inst.com
