2x Captain Field’s Parallel Rules (Boxwood)

Details 2x old Captain Field’s Parallel Rules. These decorative old rules have various measurement markings on and have decorative hinges. Lengths: 18″, 21″approx. Condition: all parts move freely, the larger rule has what looks to be a precise slot cut out running between the two hinges, the smaller rule has some warping, please see photos for condition. [‘p23’, ‘PARALLEL’, ‘rule’, ‘ruler’]