TitleGunter's line of numbers (Navigational logrithmetic rule)
Dimensions1/8 x 24 1/4 x 1 1/4 in.
DescriptionWooden ruler with navidational scales on one side and logarithmic (the "Gunter's line of numbers) on the other. (object B4.76 is actually a different ruler).
Has "J.S.M" scratched into the middle of one side.