Scales of reduction (4 articles)

Westcott reduction scale, 30 cm, 1:2.5; 1:5, 1:10; 1:20; 1:50 and 1:100

Westcott reduction scale, 30 cm, 1:20; 1:25; 1:50; 1:75; 1:100 and 1:125

Architect scale 2, plastic

Professional education reduction scale