E. R. Watts & Son Ltd Mk III Admiralty pattern Inspectors Clinometer dated 1942, & constructed black finished, brass frame, a rotating, brass cylinder, which elevates the two spirit levels, inscribed 'Clinometer Inspectors, 45 degrees, Mkiii, Admiralty pattern, E.R.Watts & Son London, no 23365', with a leather strap. In a fitted, triangular mahogany case, inscribed to the top of the hinged lid 'Inspectors Clinometer case, 1942, E.R. Watts & Son Ltd, London. condition good, age relate wear, appears to be in working order, some scratches to the box. Length of box 32.5 cm