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Wooden Ruler, Graduated with a Caliper
A ruler is only as good as its marks. Here every mark is measured from the ruler's own end with a digital caliper, so errors do not add up as they would by stepping off one centimetre after another. A 150 mm caliper marks the first half; the second half is measured from the far end. Straight-grained hardwood stays straight.
Baguhan
2 hours
Mga Tagubilin
1
1
Plane the blank
Plane the blank
Plane a straight-grained hardwood strip to about 310 x 30 x 5 mm, with one long edge dead straight and the ends square.
Mga materyales para sa hakbang na ito:
Tira ng matigas na kahoy1 pirasoMga kailangang kasangkapan:
Block plane
Panuwid
Eskuwalang de-tokod
Bais sa Mesang Panggawa2
2
Mark from the left end
Mark from the left end
Set the caliper to each length from 0 to 150 mm and, with its fixed jaw on the ruler's left end, nick the edge at the moving jaw with the marking knife.
Mga kailangang kasangkapan:
Digital na Kalibrador 6 Pulgada
Kutsilyong pangmarka3
3
Mark from the right end
Mark from the right end
Cut the blank to exactly 300 mm, then mark 150 to 300 by measuring from the right end in the same way.
Mga kailangang kasangkapan:
Digital na Kalibrador 6 PulgadaKutsilyong pangmarkaEskuwalang de-tokod4
4
Knife the lines
Knife the lines
Square each nick across with the try square and knife: short lines for mm, medium for 5, long for 10.
Mga kailangang kasangkapan:
Eskuwalang de-tokodKutsilyong pangmarka5
5
Finish
Finish
Sand lightly and wipe on linseed oil; the oil darkens the knife lines so they read clearly.
Mga materyales para sa hakbang na ito:
Langis ng Linsid10 mlMga kailangang kasangkapan:
Pirasong papel de liha6
6
Check it
Check it
Measure across several marks with the caliper; note the largest error on the back.
Mga kailangang kasangkapan:
Digital na Kalibrador 6 PulgadaMga Materyales
2- 1 pirasoPlaceholder
- 10 mlPlaceholder
Ang blueprint na ito ay gumagawa ng
CC0 Pampublikong Domain
Ang blueprint na ito ay inilabas sa ilalim ng CC0. Malaya kang kumopya, magbago, mamahagi, at gumamit nang walang pahintulot.
Suportahan ang Maker sa pamamagitan ng pagbili ng mga produkto sa kanilang Blueprint Komisyon ng Maker itinakda ng mga Vendor, o lumikha ng bagong bersyon ng Blueprint na ito at isama bilang koneksyon sa iyong Blueprint upang ibahagi ang kita.