Imagine you are trying to turn a stiff slippery round door-knob. One is the “wet soapy slippery hand test” which should be possible for many others to picture in their mind. As a result I can conduct thought experiments about handles – often able to try them out in my mind without the need to try them physically. I have looked at forces involved at work, ranging from 0.05 N to 700 N.
#A2 carry handle as for grip series#
I used, introspected, modeled, prototyped, photographed, drew, made, invented and contributed ideas on a scale from microsurgery (0.05 mm) to deseaming torches at a steel mill, where replacement springs for the handle were too stiff and injured a series of workers. Most of the article consists of more than 60 criteria against which the design of a handle or hand-held item can be compared, and it includes ways of checking some features of handle design.Ī personal note: I’ve been interested in handle design for over 50 years. This article starts by looking at common types of hand-grip, their features, how they are held and used, and the implications for design criteria. Users may be occasional, frequent, or professionally committed, and their items will vary in quality and price. The market for different handles is divided by class of users. They are more likely to sell better when competing internationally with established manufacturers. There are other reasons for looking at the ergonomics of handle design for products. There is an even greater need to apply principles of good design to handles and to understand better how they are to be used. Newer demanding activities such as micro, robotic and keyhole surgery have put more critical demands on hand-work than in the past. Like some managers and military leaders, and other astute people she was an excellent intuitive ergonomist. The author of children's books about Peter Rabbit, Beatrix Potter, insisted her publisher made her books small, to fit the small hands of children, at the same time as the typeface was large to make reading easy. All these need many of the same features, whether it is a book or a chair picked up by its back, a door or a door-handle pushed open by the body, or a hot metal shed that one leans against on a hot Australian summer day. Good handle design is important at work and in all kinds of daily activities for items that are efficient to use, safe, and attractive to buy.Īnything that can picked up by the human hand or which the body comes in contact with is in some sense a handle.
![a2 carry handle as for grip a2 carry handle as for grip](https://d1tjnq8epgf80i.cloudfront.net/wp-content/uploads/2018/12/products-SAS10H1_Two.jpg)
#A2 carry handle as for grip full#
To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.There will always be a need for well-designed hand tools and hand operated controls despite newer technology. The weight of any such item can be found on its detail page. Please also note that the shipping rates for many items we sell are weight-based.
![a2 carry handle as for grip a2 carry handle as for grip](https://i.pinimg.com/736x/f0/dc/70/f0dc70ab7ac9811c478fa50e06ba24f8--ar-guns.jpg)
Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page. When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Note that there are restrictions on some products, and some products cannot be shipped to international destinations. We can ship to virtually any address in the world. We'll notify you via e-mail of your refund once we've received and processed the returned item Shipping If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days). You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.)
![a2 carry handle as for grip a2 carry handle as for grip](https://i.pinimg.com/736x/a7/c6/7a/a7c67a5c0f7dd8eaae598391b27eeff7--birdcage-warriors.jpg)
You may return most new, unopened items within 30 days of delivery for a full refund.