Howdy gurjit1-ga,
A company called Lindstrom Precision Tools makes what you are seeking.
http://www.lindstromtools.com/index.htm
"Lindstrom has developed and produced high-precision cutters and pliers
since 1856 - making us the oldest continuous producer of handtools in
existence today."
They are a member of the Bahco group, and you can contact them here.
http://www.lindstromtools.com/link/main_contacts.htm
"Contact us"
You will need Acrobat Reader to read the original of the following document.
If you do not have it, you can download it at no cost from Adobe.
http://www.adobe.com/products/acrobat/readstep2.html
Here are the specifications, in PDF format, for the tools that match your
requirements.
http://www.lindstromtools.com/pdf/Torque_USA.pdf
"...
7-70 Ncm, 10-100 in. ozs. [MODEL] PS 501-2
...
45-450 Ncm, 4-40 in. lbs. [MODEL] PS 501-4
...
Stainless steel 1/4" Hex receiver allows use of all standard drive bits
...
Cam-over torque limiting clutch for repeatability and accuracy
..."
The following Lindstrom/Bahco office covers India.
http://www.lindstromtools.com/wtb.asp?reigon=asia&country=india
Company: Bahco Tools International
Address: Postbus 262
Town: NL-5700 AG Helmond
Country: Holland
Phone: +31 (0) 492 58 23 71
Fax: +31 (0) 492 58 23 70
E-mail: willem.van-de-westerlo@bahco.com
If you can sort out the shipping issues, HMC Electronics, located in the
United States, also stocks the Lindstrom products.
http://www.hmcelectronics.com/cgi-bin/dsp/about_us/
HMC Electronics
33 Springdale Avenue
P.O. Box 526
Canton, MA USA 02021
Phone: 1-800-482-4440
Phone: (781) 821-1870
FAX: (781) 821-4133
Email: sales@hmcelectronics.com Sales and product availabilty
Here is their pricing (in US dollars) for the Lindstrom Micro-Adjustable
Torque Drivers. In the brackets [...] are their part numbers for them.
http://www.hmcelectronics.com/cgi-bin/scripts/pc/104/3
"...
[9120-0098] PS501-2 Lindstrom Preset Torque Driver, 10-100 in ozs ... $90.06
...
[9120-0100] PS501-4 Lindstrom Preset Torque Driver, 4-40 in lbs ... $104.50
..."
If you need any clarification, feel free to ask.
Search Strategy
Google search on: torque screwdriver 450 ncm
://www.google.com/search?q=torque+screwdriver+450+ncm
Google search on: torque screwdriver PS501
://www.google.com/search?q=torque+screwdriver+PS501
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