US Patent: 1,731,954
|
Calipers
|
Patentee:
|
|
Emil J. Tjurnlund (exact or similar names) - St. Paul, MN |
|
Patent Dates:
|
Applied: |
Dec. 12, 1927 |
Granted: |
Oct. 15, 1929 |
Patent Pictures:
[
1 | 2
]
|
|
|
USPTO (New site tip) Google Patents
Report data errors or omissions to steward
Ralph Brendler
|
Description: |
This set of calipers uses an unusual "collar" locking mechanism for the legs, as well as a very interesting micro-adjust feature on one point.
Known examples are marked with the patent number as well as "Reiner and Campbell Quickset". The production tools do not have the micro-adjust feature. |
|