USD $249
This is a very rare 4″ pocket circular rule, that comes with both the original factory box and manual in very good condition.
Scales include: A, C, CI, Log, Log-Log, Binary, S,
Stock: 1
USD $40
Still in good condition, this rule has no scale bleeding and moves smoothly. Features imperial and metric rulers on the upperand lower edges of the rule, back features standard unit conversions.
Scales include:
Front – A, B, C, D, K, CI, S, L, T
Back – Unit conversion chart
Stock: 1
Sphere Research Corporation 
