USD $49
This is an advance 24 scale rule, that features feet on both sides of the rule for easy desktop use, and a cursor with 6 markers. As with most Aristo rules, it comes with black and red scales, as well as yellow bands on the slide for easier reading.
This rule has pronounced discoloration on both sides, but is still in very usable condition.
Scales include:
Front – LL01, LL02, LL03, DF, CF, CIF, L, CI, C, D, LL3, LL2, LL1
Reverse – LL00, K, A, B, T, ST, S, C, D, DI, LL0
Stock: 1
USD $49
This single sided rule features all the basic scales needed for everyday math, and includes a ruler on the top edge of the rule.
Scales include:
Front – A, B, C, D, K, BI, CI, LL2, LL3
Back – Blank
Stock: 1
USD $30
This single sided rule is suitable for the mathematician on the go and features clear plastic edging on the upper and lower ruler edges with imperial and metric rulers.
Scales include:
Front – X, XZ, X2, X3, X 2/Z, 1/X, SIN, TG, ROOT (1-X2), LGX, E^X, E^0.1X, E^0.01X
Back – Blank
Stock: 1
USD $45
This single sided rule comes with a case and factory instruction sheet. The upper edge of the ruler fetures a metric ruler.
Scales include:
Front – A, B, C, D, K, L, CI, S, T, ST
Back – Blank
Stock: 1
Sphere Research Corporation