Robert Sorby Internal/External Caliper 8 1/2" - 9785 Block Plane This is particularly useful as

This is particularly useful as most woodworkers have the occasional need to drill metal for hinges

Weight approx

Neptune can virtually handle any conceivable project requirement

further reduces airflow leakage

This design gives an extremely strong grip

Robert Sorby Internal/External Caliper 8 1/2" - 9785 Block Plane This is particularly useful asInternal External Caliper 8 1 2" The design of these Robert Sorby callipers allows not only the measurement of wall thickness but also inside dimensions like the size of an aperture. As with all double ended callipers the measurement at one end automatically transfers to the opposite. The Robert Sorby Internal External Calipers are available in 6" and 8 1 2" models.