( 9 scales)
(7 scales)
(9 scales)
(8 scales)
(11 scales)
(13 scales)
(21 scales)
(20 scales)
(14 scales)
(22 scales)
(26 scales)
(23 scales)
(24 scales)
(10" - 9 scales)
(10 scales)
(29 scales)
(25 Scales)
(30 scales)
(6 scales)
(25 scales)
(7" - 25 scales)
(10 scales + Trig Formulas )
(32 scales)
(10 & 17 scales)
(18 scales)
(34 scales)
(6" diameter - 15 scales)
(10 scales + Unit Conversion
(22 - scales)
(24 - scales)
(28 scales)
(5 scales)
(11-scales)
(5" diameter - 8 scales)
(4.25" diameter - 7 scales)
(6" diameter - 4 scales)
(9-scales)
(2" diameter - 1 Spiral Scale)
(13 scales + Formulas)
(19 scales)
(14 - scales + instructions)
(5 -scales)
(12 - scales)