K&E 4031 5" Mannheim 1903 - 1910

These scans are from the collection of Peter Gilmore

This is a good example of an early 4031 with the metal framed cursor and extended cm scale inside the frame.

Front side

Rear Side

Front side and case

Back side of slide and inside of the frame of the rule.

Comparison views of the early rule next to a 1915 style rule