Finger gauges and ring mandrels answer different questions. Choose the tool for the object being measured.

Measure a finger

A finger gauge is used to assess finger size. Check its sizing system and instructions, then compare the result with the ring seller's sizing chart.

Measure an existing ring

A marked ring mandrel helps check an existing ring. The markings and measurement range need to match your requirements. Unmarked forming mandrels serve a different purpose.

Compare a kit

A measuring kit may combine gauges, a mandrel and adjustment accessories. Read the included-items list; size adjusters change the fit of suitable rings and do not replace measurement.

Before you order

  • Confirm the scale: US, UK, EU, HK or another stated system.
  • Confirm the item being measured and the range required.
  • Check whether the listing is for one tool or a set.

Shop ring sizers · Shop ring sizing kits · Read the buying guide