Gunnar Hámundarson and in close combat his weapon of choice was the "atgeir", which scholars consider to have been a halberd or glaive of some sort. He was said to have taken this famed weapon in battle from a man named Hallgrímur, while on a Viking raid to the island of Eysýsla (Saaremaa in present-day Estonia - see detailed account on that page). Gunnar was also a skilful stone-thrower, able to hit enemies between the eyes from meters away, and an excellent swimmer. There was supposedly no game at which he had an equal. His behaviour was always polite, but firm —
Bill of quantities As the rates for materials and labour change due to inflation, these books are frequently republished.. The practice historically of estimating building costs in this way arose from non-contractual measurements, taken off drawings to assist tenderers in quoting lump sum prices. There are different styles of bills of quantities, mainly the Elemental BOQ and Trade Bills. A Contingency sum is an item found within a Bill of quantities (BoQ). The item refers to unforeseeable cost likely to be incurred during the contract. There are two types of contingency sum. The first refers to a specific item, e.g., 'additional alterations to