Display #
|
Brand
|
Tool #
|
Size
|
Opening
|
| 1. |
Plomb |
1216 |
1/2 |
50/100 |
This Plomb represents the modern combination wrench. This same
basic design is still used today.
For a complete History of Plomb
tools, click on
http://pweb.jps.net/~gemlake/plombtoo.htm
|
| 2. |
Austin |
4-C |
1/2 |
92/100 |
We assume this is a Whitworth measurement, as the tool probably
was for the English-built Austin car.
|
| 3. |
Nderes |
79-c |
1/2 OC 1/2 SAE |
80/100 |
Fits 1/2 Hex Head Cap Screw
|
| 4. |
W&B |
33 |
1/2 |
92/100 |
This is a Whitman & Barnes, and based on
the opening size, it appears to be Whitworth.
For the History of W&B, see American Wrench Maker, Page 264, on
our
Books Page.
|
| 5. |
Billings & Spencer |
2026 |
1/2 OC - 1/2 USS |
79/100 - 88/100 |
Light service wrench fits hex head cap
screw sizes 1/2 and 5/8 and S.A.E. standard screw nut
sizes 1/2 and 9/16. Milled openings 3/4 (.750) and 7/8 (.875)
91/4" long
|
| 6. |
Williams |
733 |
1/2 USS |
88/100 |
Fits head or nut on a 1/2-13 USS bolt.
For more information on Williams,
refer to page 270, American Wrench Maker, on our
Books Page.
|
| 7. |
Billings & Spencer |
2025 |
1/2 CAP |
77/100 |
Light service wrench fits hex head cap
screw sizes 1/2 and 9/16.
Milled openings 3/4 (.750) and 13/16 (.8125) 91/4"
long
|
| 8. |
Spearpoint |
|
1/2 AF |
50/100 |
1/2 AF means American Fine, a British term,
for more info
click on
http://www.team.net/sol/tech/SpannerSize.html
|
| 9. |
Winchester |
1537 |
1/2 STD |
101/100 |
Standard nut size 7/16 & 1/2. Milled
opening 28/32 (.8750) & 32/32 (1.00) 103/8"
long.
|
| 10. |
Billings & Spencer |
1566X |
1/2 NUT |
88/100 |
Fits head or nut on 1/2-13 USS Bolt
|
| 11. |
Snail |
6 |
1/2W -
1/2 BS |
94/100 -
82/100 |
For explanation on this wrench, refer to
Web Page
http://www.team.net/sol/tech/SpannerSize.html
also refer to Web Page
http://www.team.net/sol/tech/whitworth-hist.html.
|
| 12. |
Shelly |
|
1/2 BSF |
92/100 |
For explanation on this wrench, refer to
Web Page
http://www.team.net/sol/tech/SpannerSize.html
also refer to Web Page
http://www.team.net/sol/tech/whitworth-hist.html.
|
| 13. |
Da Sco |
6-31 |
1/2 CS |
77/100 |
Fits head on 1/2 Cap Screw.
|
| 14. |
M.B. Skinner Co. |
|
1/2 bolt |
80/100 |
No idea what bolt they refer to.
|
| 15. |
Automatic Sprinkler |
38-070 |
1/2 F-HS -
1/2-17/32-H |
72/100 -
84/100 |
We assume this is a special tool for their specific
application.
|
| 16. |
Williams |
307 |
1/2 USS-Bolt |
94/100 |
Fits the head and nut on their version of 1/2- USS Bolt.
Note the difference in size from #5 and #6 probably from wear,
etc.
|
| 17. |
Wright |
P 3 J |
1/2 OP |
50/100 |
No idea what OP means. For more information on Wright,
refer to
page 276 - American Wrench Maker, listed on our
Books
Page.
|
|
Thanks to Don "Bus" Haury - at
donhaury@southwind.net
and others for their response.
With their help we have been able to clean up the meaning on most of
these wrenches.
We could still use help on #14, #15 and #17.
For an interesting article on standardizing wrench measurements,
drop Don or us a line.
|
