Parallel Rules

Vintage park instrument Co parallel rule no 1916

Vintage park instrument Co parallel rule no 1916

Price: $9.99 (0 Bids)
Time Left: 1d 3h 4m
KEUFFEL & ESSER DECI-LON SLIDE RULES CASE PLUS BOOKS

KEUFFEL & ESSER DECI-LON SLIDE RULES CASE PLUS BOOKS

Price: $40.00 (6 Bids)
Time Left: 1d 20h 39m
Antique wooden, brass hinges navigation parallel rule

Antique wooden, brass hinges navigation parallel rule

Price: $30.00 (0 Bids)
Time Left: 5d 13h 24m
24' FOLDING PARALLEL RULE, C-THRURULER CO. IN BOX GREAT

24' FOLDING PARALLEL RULE, C-THRURULER CO. IN BOX GREAT

Price: $2.99 (0 Bids)
Time Left: 5d 16h
ULTRALIGHT DIVIDER NO. 176 WEEMS & PLATH IN BOX - GREAT

ULTRALIGHT DIVIDER NO. 176 WEEMS & PLATH IN BOX - GREAT

Price: $4.99 (0 Bids)
Time Left: 5d 16h 13m
NAUTICAL SLIDE RULE, WEEMS&PLATH MODEL 105, EXCL. COND.

NAUTICAL SLIDE RULE, WEEMS&PLATH MODEL 105, EXCL. COND.

Price: $1.99 (1 Bids)
Time Left: 5d 22h 24m