DDT Exam 2

Which Type of dimensions replaced another

Decimal replaced fractional

Four Systems of Dimensioning

Decimal, Fractions, Metric, Dual dimensioning

What is a true blue print?

Blue papers

A Paper Size

8 ½ x 11

B Paper Size

11 × 17

C Paper Size

17 × 22

D paper size

22 × 34

E Paper Size

34 × 44

2:1

Drawing is double real size

1:2

Drawing is half real size

General Notes

Used for the entire drawing

Local Notes

Used for specific areas

Detail Drawings

More detail about a specific part

Typical dimensions

TYP, dimensions that apply to identical parts

Bolt Circles

Bolt circle dimensioning center of one bolt to another, or coordinate dimensioning

MMC

Leaves the most material behind

LMc

Leaves least material behind

Allowance

Smallest Hole - Largest Shaft

International system of Dimensioning

Metric system