A (pair of) drawing compass(es). The rotation point of the legs are set at the screw points so resizing them should be very easy with Inkscape 그리기 기술 아키텍처 드로잉 나침반
A (pair of) drawing compass(es). Similar to the other in my collection except this one includes the adjusting wheel. 학교 교육 그리기 나침반 2
Remember back to the days of the 80s when these were banned in school and were confiscated on a regular basis. No scientific stuff here, just a plain and simple old fashioned calculator with a seven segment display 학교 레트로 수학 오래 된 계산기
The same as my other blue ruler, however in the first one the numbers are left as fonts, but in this one they are converted to curves. 그리기 측정 학교 파란색 눈금자 2