No Image Lot 292 A Watkin's patent clinometer by J Hicks, Hatton Garden. 292A Watkin's patent clinometer by J Hicks, Hatton Garden. Lay's Auctioneers A Watkin's patent clinometer by J Hicks, Hatton Garden. Number 5740, in a leather pouch, diameter 7cm, together with two student's brass microsc... Add to watchlist Live