From a collection of items from a byre in Brock

A 6ft (180cm) pit saw blade

Pit saws were used to cut planks from tree trunks, for house and boat building. The “pit” in Brock would have been a hollow in the sand dunes. The log was placed horizontally across the pit or frame and the saw was usually operated by two men: a top-man above and a pit-man guiding the saw from below. This may have been a one-man saw

With the absence of local sawmills the use of pit saws would have continued long into the 1800s and possibly even the 1900s