| Make |
Diwa, Denmark |
| Model |
Technical 201 |
| Notes 1. Sold by Lawes Rabjohns.
2. The scales on the rule are not labelled.
3. The rule has a full set of "standard" gauges points.
4. The trig scales are on the back of the slide with a single plastic window with hair
line. |
Front view
 |
Detail - front left
 |
Detail - gauge points
 |
Detail - back right
 |
| Manufacturing date |
>1952. Not listed in 1952 Lawes Rabjohns catalogue. |
| Length |
10" |
| Material |
Plastic on mahogany |
| Scales |
K,A [B,CI,C / S,ST,T ] D,L |
| Gauge points |
p: 3.14: A,B,C,D
r' : 3438 : C,D
r" : 206255 : C,D
c : 1.13: C,D
c': 3.57: C,D
r11: 6.37:C,D |
| Cursor |
Glass, full metal frame |
| Hair lines |
.785 |