Attention to accuracy! It is very easy to use if you get good things

I have written another person, but the items I got were also off the C scale and the D scale. When we align the baseline of C scale and D scale, it is 2% stronger deviation in the neighborhood of 2.5 ~ 3 (Look at the picture, C scale is 3.08 when D scale is 3) With this it can not add as a calculation scale . I think that the accuracy of the fixed scale and the intersuguration is structurally difficult to obtain, so I think that those who will get it from now will be cautionful. I contacted the dealer to have it replaced immediately. After exchanging good products, I like it very much, as expected. It is the best advantage that it can calculate without stress without eye blur due to circular shape. In addition, since the C scale and the D scale are longer than the normal straight type 10 inch scale, it is easy to read the numbers. Even so, since it is 11 cm in outer shape, I think that it will be this circular type instead of a 5 inch or 6 inch straight type if you carry it. ... I can not enter the breast pocket ... it seems to be one favorite book.

Somehow it is not excited to complicated memory!

I used a single stick of plastic made by Henmi somehow I was concerned about a circular computing board somehow I was still selling at Amazon and spotted a strange way Normal computation is already a function calculator OK It is not a computing board at present because it is an answer if you program a program involving an involute calculation, but it is not terrible to control the watch scale on Led Zeppelin and Breitling! ! What? Although it is a dish of such an engineer's ... · · · It is a medal of an old engineer ~

Science and technology accessories

I gave it to my eldest son, but I think that such things will remain in my mind unexpectedly. Before we go to the science and engineering department. I hope you enjoy life in science.

I learned a lot.

Do something on the wristwatch have a calculation scale and can it be used? Is it convenient? I got interested and purchased it was useless. I understood well that convenience and easy to use.

Easy to use

In the student days all complicated calculations were carried out with the calculation slides. At that time the slide was 30 cm in length, but the purchased counting scale is easy to carry and it is easy to use.

Nostalgic

As a technical shop in the analog age, the cabinet was broken and I was in trouble. I could not find it at a stationery store, but I am impressed with it.

No 300 N other

The evaluation of No300N is "poor? I just said that. The slide of the surface was slightly warped when I tried it. Moreover, the slide is caught and it does not turn smoothly. Also, the scale of the D scale and the scale of the C scale are totally deviated (the maximum is near "3"). Although a little warpage of the slide and the deviation of the scale could be tolerated, I could not tolerate the bad movements and dismantled it quickly. After the solvent such as adhesive flowed in the groove of the fixed scale (the place where the slide fits), it had a wide range, the surface was sandpaper, and movement of the slide was hindered. It eliminates the unevenness of the interior, and also corrects the warp of the slide and assembled it and became usable. In addition, this also was corrected because there is too much clearance between the scale and the cursor. Though I thought that it was a defective product by chance, I bought No 270N, No 27N at a later date, but the movement of the slide is very bad (27N machining is scratchy) This was also fixed. The deviation of the scale and the gap of the cursor are the same. There is nothing to worry about in others, "MADE IN JAPAN" is a little poor workmanship. People thinking of purchasing should think that it is better to purchase after confirming the real thing if possible.