Mars® comfort 551 Precision compass. Precision compass with spindle guide, spring-bow head and centre wheel. Solid metal compass. Hinged leg joint and needle shoe. Interchangeable lead part with shank Ø 4 mm. Interchangeable shouldered needle. Max. circle Ø approx. 265 mm, with extension bar approx. 500 mm. Length 154 mm. Case with hinged lid containing 1 precision compass with lead part, universal adapter and spares box
