180 ° / 360 ° Cov kauj ruam transporter. Transparent tsim nrog luam luam tau. Thov hu rau peb txog MOQ, nqe, tus neeg saib xyuas thiab lwm cov kev koom tes tseem ceeb.
Protractors thiab semichliffular
Khoom siv: pob tshab yas
Puag: 10 / 12.5cm