USE/CARE OF HANDTOOLS & MEASURING TOOLS - OD1621 - LESSON 3/TASK 1
(1) To convert Centigrade to Fahrenheit, multiply the temperature in
Centigrade by 9/5 and add 32 to the result; F = (9/5 x C) + 32.
(2) To convert Fahrenheit to Centigrade, subtract 32 from the
Fahrenheit temperature and multiply the result by 5/9; C = (F - 32) x 5/9.
(3) The boldface numbers on the temperature conversion chart refer to
temperatures that are to be converted from Fahrenheit (F) to Centigrade (C),
For example, what is Fahrenheit equivalent of 60C?
or vice versa.
At
boldface 60, look to the F column and read 140.0.
3.
Scribers
a. Purpose. Scribers are used to mark and lay out a pattern of work to
be followed in subsequent machining operations.
Scribers are made for
scribing, scoring, or marking many different materials such as glass, steel,
aluminum, copper, etc.
FIGURE 161.
TYPES OF MACHINIST'S SCRIBERS.
b. Types of Scribers.
(1) Machinist's Scribers.
Machinist's single point pocket-type
scribers (figure 161) have a scriber point made of tempered high grade steel
and a handle of nickel plated steel tubing.
The point is reversible,
telescoping into the knurled handle
212
Previous Page
