| Churchill/MCRA 5 contains: |
|---|
| <-- See earlier |
|---|
| 24 |
Fuse 233: improvements in or relating to bombs, shells and other missiles |
| 25 |
Switch no. 1 (Pull Switch) |
| 26 |
Switch no. 2 (Pressure Switch) |
| 27 |
Switch no. 3 (Release Switch) |
| 28 |
Air Pressure Switch |
| 29 |
Air Pressure Switch |
| 30 |
Switch no. 8 (A.P Switch) |
| 31 |
Switch no. 9 ('L' Delay) |
| 32 |
Projectiles, fuses, time-delay action mechanism |
| 33 |
Switch no. 9 ('L' Delay) |
| 34 |
Switch no. 9 ('L' Delay) |
| See later --> |
|---|
|
The Papers of Colonel R S Macrae
| Title |
Air Pressure Switch |
| Reference |
MCRA 5/29 |
| Covering Dates |
Dec 1933-Mar 1953 (The dates given are for the originals which the copies were taken from at a later date.) |
| Extent and Medium |
1 file |
|
| Content and context |
Copies of Crown documents and design drawings for Macrae's patent application on the switch (also known as the Aero Switch), designed to sabotage enemy aircraft by firing an explosive charge once a certain height was reached. |
| No further on-line information. |
|
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