16-17MM ด้ามจับพินเกจอลูมิเนียมอัลลอยล็อคแน่นด้วยหัวจับทองเหลืองแบบปลายคู่ , Aluminum alloy,double end pin gauge holder for pin gauge φ16～17mm

     A reversible gauge handle is a tool for precision measurement (like checking hole sizes) that holds a plug or pin gauge, allowing you to quickly flip the gauge element within the handle when one end wears out, effectively getting two gauges in one and extending its usable life, often color-coded (green for "Go," red for "No-Go") for easy identification.

• Dual-Ended: Each handle holds a gauge with two ends, usually a "Go" (accepts) and "No-Go" (rejects) size for checking internal dimensions like holes or threads.

• Reversible: A simple collet mechanism allows you to rotate the gauge element 180 degrees when the first end becomes worn, making the other end the new "Go" or "No-Go".

• Color-Coded: Handles often feature different colors (e.g., green/red) or markings to clearly distinguish the "Go" and "No-Go" sides.

• Applications: Used in quality control for aerospace, medical, and general manufacturing to ensure parts meet tight tolerances