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 history behind the humble doorknocker.—Series 74, Wetherby 6
Duration: 04:26
Roo Irvine is ordered to rendezvous at a warehouse in Hereford.—Series 74, Leominster 18
Duration: 04:51
Holding history in your hands.—Series 74, Detling 8
Duration: 04:32
The museum where the past takes flight.—Series 74, Bargain Hunt Takes Flight
Duration: 04:46