Drawing/Painting Resource Combination #4!?

Hello everyone,
   When you are drawing a scenery, or a model, are you having a difficult time with the proportions of your subject(s)? Do you wish you had something to measure parts of your subject, instead of erasing over and over on your paper/canvas (and causing streak marks) because your eyes are deceiving you? Do you wish you had something that was easy to use while being accurate with your drawings/paintings (and not have to focus on details during the initial stages of your drawing/painting)? Fortunately, there is an item out there that can answer your questions. Using a scale divider will allow you to focus more on the drawing/painting process instead of focusing on the subject(s) measurements. To use a scale divider, simply:

1. Hold up the scale divider (arm's length) parallel (to you and) to the subject(s)
2. Move the top legs to their appropriate height/width of the subject(s)
3. Take the scale divider back, and place it onto your paper/canvas, and
4. Place the appropriate marks on your paper/canvas. The mark will give you the ideal height/width of your subject(s). 

While there are numerous scale dividers available, from my research, many are expensive. Fortunately, there are alternative and affordable scale dividers available (listed below). If you're on-the-go a lot, or you don't want to eye-ball everything and be concerned with the measurements, obtaining a scale divider might be a great tool to have. If you have any questions, please feel free to contact me via e-mail, private message, or comment below this post. I hope this was helpful. Thank you, and enjoy!:

-Derwent Scale Divider (a great alternative scale divider and affordable, too!):
http://www.amazon.com/Derwent-2300580-Scale-Divider/dp/B00A37UU1Y/ref=sr_1_1?ie=UTF8&qid=1425100305&sr=8-1&keywords=derwent+scale+divider

-Accurasee Proportional Divider (another great scale divider for those that are on a tight budget!):
http://www.amazon.com/gp/product/B005QSBA2S/ref=s9_simh_gw_p229_d0_i2?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=desktop-1&pf_rd_r=132HSNE17827489KJ3CX&pf_rd_t=36701&pf_rd_p=1970559082&pf_rd_i=desktop

-Artcoe Scale Divider (a nice scale divider to use and still affordable!):
http://www.amazon.com/Artcoe-Scale-Dividers/dp/B003E0QWX2/ref=sr_1_3?ie=UTF8&qid=1425100305&sr=8-3&keywords=derwent+scale+divider

-V.V.