Board Size 750mmX600mmX20mm Made of seasoned best For wood with wooden batons at the back , having slots for Brass Screws and washer nuts for clamping. Complete with metallic head& disc . Brass.  Accessories Sight vane, spirit level, Magnetic compass, Plumbing fork, Plum bob all brass, Canvass cover full and highly polished wooden stand.  Accessories -  Alidate Brass 600mm Magnetic compass 150mm Spirit level brass 150mm  Brass Plumbing Fork, Plumb Bob , Canvas with handle