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 $115
While this is only a single sided rule, with 14 scales it is definitely for more advanced users. It features clear plastic rulers on the upper and lower edges of the rule in metric and imperial units, and is accompanied with a unit conversion card that stows in separate area of the case.
Scales include:
Front – K, A, B, BI, CI, C, D, P, S, T, L, LL1, LL2, LL3
Back – Blank
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
USD $65
A 14 scale pocket rule, with both metric and imperial rulers printed on clear plastic at the upper and lower edges.
Scales include:
Front – A, B, C, D, K, P, S, T, BI, CI, L, LL1, LL2, LL3
Back – Blank
Stock: 1
Sphere Research Corporation