Can anyone identify what this is?

The reds pick this mysterious object. It could be a Ship Builders tool. Any ideas?

29 January 2018

2 minutes

This clip is from

Bargain Hunt—Series 49, London 9

The nightly Ripon Hornblower ceremony is believed to be the oldest in the world.—Series 74, Wetherby 5
Duration: 05:05
The bagpiper who performed at some of WWII’s most brutal battles.—Series 74, Exeter 13
Duration: 05:34
A pioneer of women’s cricket.—Series 75, Women’s Cricket v Tennis Special
Duration: 05:48
The Viking treasure found by metal detectorists.—Series 74, Leominster 17
Duration: 04:47