"标上刻度" can be translated into English as "mark with scales" or "label with graduations".
"Mark with scales" emphasizes the action of indicating or drawing the scale markings on an instrument or measuring device.
"Label with graduations" also conveys the idea of adding scale indicators, with "graduations" specifically referring to the marked divisions on a measuring instrument.
Both expressions are commonly used in contexts related to instruments, measuring devices, or diagrams that require scale markings.