Staedtler Masterbow Compass

Precision metal compass with spring-bow head and center wheel, hinged leg joint and needle holder in needle leg. Maximum circle drawn: 10-3/8" (265mm). Overall compass length: 6-1.8" (155mm). Spare parts box includes two pieces of lead and one needle joint. Comes in plastic wallet.
Size: 3-1/4" x 1/2" x 8-1/8".