(1) Ratchet heads for spanners,reverse direction by turning spanner over.These spanners are flat which helps where access is difficult.These spanners typically need only 8 degrees of movement to engage the next tooth on the ratchet.
Baconsdozen new and obsolete tools.
Details of special features on some wrenches,spanners and sockets.Makers and distributors contact details etc.
| |
(1) Ratchet heads for spanners,reverse direction by turning spanner over.These spanners are flat which helps where access is difficult.These spanners typically need only 8 degrees of movement to engage the next tooth on the ratchet. |
|
(2) Spanner ratchet head with swivel.All the advantages of the above but the spanner handle has a swivel joint built in close to the ring end.Handy when spanner can't be used flat,for example where a cranked ring spanner would normally be used to give access. |
|
(3) A bi-hex or twelve sided socket,same configuration normally used on ring spanners.Impact sockets are normally mono hex (six sided) for strength. |
Tool manufacturers,importers and distributors.
| Thomas Meldrum Ltd. | Manufacturers box spanners,tyre levers,wheel wrenches,axle stands,ramps (Melco brand) .Based in UK. For web site click here. |
| Gunson Ltd. | Multimeters,Compression testers,vacuum guages,timing lights,colourtune and other test and tuning equipment.For web site click here. |
| Deltec Ltd | Based in UK Make and import impact sockets,chromed sockets and slogging wrenches. etc...Web site. |
| Franklin Tools.. | Distributors and importers of hand tools.Full range but apart from a few impact sockets only metric catered for.Web site. |
| Elora. | Long established German maker.High quality hand tools,big range including imperial/whitworth spanners and sockets etc.Web site. |
| Smith Francis | English maker established over 70 years..Maker of Williams and Snail Brand hand tools.High quality and a good range metric and imperial.Web site. |
| Laser Tools | Mainly hand tools.Good range and some innovative products.Specialised and commonly used tools.Web site. |
| Draper Tools. | Importer of hand and power tools.Very big range but a bit limited in imperial spanners/sockets etc.Web site. |
| Sealey | Based in UK imports mainly far eastern made hand and power tools.Big range including some imperial tools. |
| Koken | Based in Japan but with a UK branch.Make a huge range of high quality sockets,normal and impact type. |
You can e-mail me here.
Baconsdozen Home page click here.
Whitworth to B.S.F to Imperial to metric bolt size conversion tables.
Whitworth and BSF (British standard fine) refer to the thread size of the bolt or nut.(ie) a spanner marked 7/8 inch whit fits a 7/8inch whit threaded nut or bolt (or a 1 inch B.S.F) it is however not 1 or even 7/8 inches wide.To help with nut or bolt identification,whitworth is a coarser thread than BSF. and A.F (across flats) is the size measured in inches (or mm) across opposite flats,(ie) a 3/4 inch af spanner is 3/4 inch wide,the same applies to a metric spanner.On older macines it's not at all uncommon to find a mixture of Whit,BSF,a.f and even a BA or two thrown in.
Whit/BSF and the metric or imperial Equivalent. |
Imperial to Metric |
Whitworth |
BSF. |
Metric. |
Imperial (af). |
A.F |
MM. |
|
1/8 |
3/16 |
8.64 |
.340 |
1/4 |
6.35 |
|
3/16 |
1/4 |
11.3 |
.445 |
5/16 |
7.94 |
|
1/4 |
5/16 |
13.34 |
.525 |
3/8 |
9.52 |
|
5/16 |
3/8 |
15.24 |
.6 |
7/16 |
11.11 |
|
3/8 |
7/16 |
18.03 |
.710 |
1/2 |
12.7 |
|
7/16 |
1/2 |
20.83 |
.82 |
9/16 |
14.29 |
|
1/2 |
9/16 |
23.37 |
.92 |
5/8 |
15.88 |
|
9/16 |
5/8 |
25.65 |
1.010 |
11/16 |
17.46 |
|
5/8 |
11/16 |
27.94 |
1.100 |
3/4 |
19.05 |
|
11/16 |
3/4 |
30.48 |
1.200 |
7/8 |
22.22 |
|
3/4 |
7/8 |
33.02 |
1.300 |
15/16 |
23.81 |
|
7/8 |
1 |
37.59 |
1.480 |
1.00 |
25.40 |
|
1 |
1.1/8 |
42.42 |
1.670 |
1.1/16 |
26.93 |