1. Material: brass
2. Size: isosceles triangle ruler about 12.3x8.8 cm/piece, right angle triangle ruler about 12.2x7.1 cm/piece, wave ruler about 15.6x3 cm/piece, 0-15cm ruler about 16.6x1.7 cm/ Pieces, 0-18cm ruler approximately 18.7x2.7 cm/piece, caliper approximately 13.9x4.2 cm/piece, protractor approximately 10.2x5.7 cm/piece
3. Weight: isosceles triangle ruler is about 31g/piece, right angle triangle ruler is about 58g/piece, wave ruler is about 54g/piece, 0-15cm ruler is about 22g/piece, 0-18cm ruler is about 62g /Piece, caliper about 48g/piece, protractor about 57g/piece,
4. Scope of application: daily study, office drawing, simple measurement, etc.
5. Features: solid and stable material, laser scale, clear reading, wear-resistant and durable, diverse specifications, wide applicability, smooth surface, convenient and practical