Astro Pneumatic ASTRO PNEUMATIC TOOL CO AO3018-18 DIGITAL GAUGE ASSY- REPLACEMENTPART (GAUGE ONLY) MSRP: Price: 2099-12-31 $41.59 This is a digital gauge assembly for the Astro Pneumatic Tool Co. AO3018-18 tool. This is a replacement part only, and does not include the tool. Add to Cart Compare Add to Cart