巻き尺

1. Origins, structure, and basic meaning

• Structure: In 巻き尺 (まきじゃく), rolling 巻き and measure 尺 combine to name a tape measure.
• Basic usage: 巻き尺で marks a tape measure as the instrument, while 巻き尺を makes it the object taken out or used.

2. Common pitfalls and similar expressions

• Instrument and object marking
  • Its flexible, retractable form distinguishes it from a rigid straight ruler.