Thanks!! I do have a couple here from Spain & Germany, time to look for a lefty!!

Quote from: lptools on November 13, 2020, 03:46:40 PM
Ok. I am the carpenter who does not know what you guys are referring to as far as right hand/left hand threads.Please explain!! Thanks, Lou

Top: Right-handed screw (American)
Bottom: Left-handed screw (European, subject to exceptions)

Henri

At least one European toolmaker offers the choice of L or R to satisfy the ambidextrous.

Quote from: humber2 on November 22, 2020, 02:08:31 AM
At least one European toolmaker offers the choice of L or R to satisfy the ambidextrous.

Humber2, I have a 1981 catalog of GEDORE in which this is the case.
Don't know what that is like now.

Henri

Quote from: Nasutushenri on November 22, 2020, 09:00:14 AM

Quote from: humber2 on November 22, 2020, 02:08:31 AM
At least one European toolmaker offers the choice of L or R to satisfy the ambidextrous.

Humber2, I have a 1981 catalog of GEDORE in which this is the case.
Don't know what that is like now.

Henri

Thanks for that confirmation Henri, I've found both in the '77 Dowidat catalog.

Elora reference their one option as being Swedish pattern

Hazel reference their one option to DIN3117

Back to Dowidat who reference three options,

No 73 is Swedish pattern left hand knurl with opening angle 15* Sizes 4,6,8,10,12" in Chrome Vanadium, 15,18,26 Carbon Alloy Steel

Next Both 88 and 91 are "Single head wrench adjustable confirms to DIN 3117 form B

No 88 is American pattern, right hand knurl with opening angle 25*, Chrome Vanadium drop forged. Sizes 4,6,8,10,12"

No 91 is also American pattern, left hand knurl with opening angle 22.5*, Carbon Alloy Steel. Sizes 15,18"

Little wonder one would find frustration using mixed makes and options.

Humber2, thanks for the detailed information.

The 1981 GEDORE catalog mentions the following:

Model 62, adjustable wrench, left hand knurl, DIN 3117, Form A, jaw position 15°; , special steel DIN 17.200 W.- No. 1.0501.
Sizes 6, 8, 10, 12, 15, 18, 26". (26" jaw position 45°).

Model 91, adjustable wrench, right hand knurl, DIN 3117, Form B, American pattern, jaw position 22°, special steel DIN 17.200 W.- No. 1.0501.
Sizes 4, 6, 8, 10, 12, 15, 18".

Model 88, adjustable wrench, right hand knurl, DIN 3117, Form B, American pattern, extra slim form, jaw position 22°,
GEDORE-VANADIUM 31 CrV 3 W. No. 1.2208.
Sizes 6, 8, 10, 12".

The question remains for me: why should the American wrenches have right hand knurls and European left hand ones.


Regards
Henri

yea,why cant they all be the same...maybe no logical explanation