Calipers adopted.Easy to measure the total length of fish accurately and speedily.Ideal for taking photos to be posted on SNS sites.A measure with a red line and large scale with high visibility even at night.Adopting a large scale for the measure made of clear white or clear yellow tarpaulin that is highly visible at night.The calipers adopt a fluorescent red pin line with high visibility and are also ideal for taking photos to be posted on the SNS.The measure made of a silicon band is accommodated compactly and provided with a carabiner that can be attached to bags and belt loops.Measurement range: 650 mm