Apeks TEK SPG (with hose)The Apeks TEK gauge is a high quality chrome plated Submersible Pressure Gauge (SPG) with a black face to help reduce glare and to preserve night vision in low light environments i. e. inside a cave or wreck.. High quality chrome plated SPG Black faced SPG with luminescent numbers and hand that glows in the dark when charged with a light. 0 360 bar psi scale Max working pressure 300 Bar Tempered glass face 52mm 2 diameter face Available in metric only.