Maker:FABER-CASTELL (Germany)

Model:Mathema No. 2/84N

PHOTO

Scales Front: Left Front: (e

Right Front: ||

Scales Back: Left Back: || 10 ln X, ln X, 0.1 ln X, Y || y, 0.1 cosh x

Right Back:|| e

Gauge Marks:

Cursor Front: Under the upper two sqrt X scales are two lines to the left at 2π and π/4. To the right are two lines at 4π and π/2. These symbols were printed above on the cursor.

Cursor Back: Under both the the upper and lower scales are two lines at left at 2π and π/4. To the right are two marks at 4π and π/2. These symbols were printed above and below on cursor.

Construction: 20 cm.; Plastic, Cursor is not framed. Adjustable metal brackets.

Date:

Source: Rod Lovett Collection

Information: This is based on 400