measuring viewfinder
(1)测量用瞄准器
(2)带物镜瞄准器

• gate pulse
• gate trigger signal
• gate turn off signal
• gate value
• gate width
• gather
• gating
• gating pulse
• gating siganl
• gatling gun laser
• gauge
• gauge batr
• gauge block
• gauge[-block] interferometer
• gauge caliper
• gauge feeler
• gauge glass
• gauge hole
• gauge outfit
• gauge point
• gauge pressure
• gauging error
• gauss
• Gauss beam
• Gauss-condition error