Số hiệu tiêu chuẩn
GOST R 50249
Tên tiêu chuẩn
Mechanical pencils. Part 2. Black leads. Classification and dimensions
Ngày phát hành
1992-00-00
Tiêu chuẩn tương đương
ISO 9177-2 (1989-03), IDT * GOST 19445.1 (1995), IDT
Tiêu chuẩn liên quan
GOST R 50250 (1992) * GOST 2.303 (1968) * GOST 2.305 (1968) * GOST 2.306 (1968)
Từ khóa
Classification * Classification systems * Crayons * Definitions * Design * Designations * Dimensions * Drawing office equipment * Graphite * Hardness * Leads (pencils) * Materials * Mechanical pencils * Pen refills * Pencils * Propelling pencils * Stationery * Tolerances (measurement) * Mines * Slugs * Obturating points * Drawing system