Page 15 - Content.pmd

19.Marking practice with dividers, odd leg Files- specifications, description,
calipers and steel rule (circles, ARCs, materials, grades, cuts, file
parallel lines). (4 hrs.) elements, uses. Types of files, care
and maintenance of files.
Measuring standards (English,
Metric Units), angular
measurements. (04 hrs.)

20.Marking off straight lines and ARCs Marking off and layout tools,
using scribing block and dividers. (4 dividers, scribing block, -
hrs.) description, classification, material,
care & maintenance.
21.Chipping flat surfaces along a marked
line. (9 hrs.) Try square, ordinary depth gauge,
protractor- description, uses and
22.Marking, filing, filing square and cares.
check using tri square. (9 hrs.)
Uses, care & maintenance of cold
chisels- materials, types, cutting
angles. (04 hrs.)
23.Marking according to simple Marking media, marking blue,
blueprints for locating, position of Prussian blue, red lead, chalk and
holes, scribing lines on chalked their special application,
surfaces with marking tools. (8 hrs.) description.
24.Finding centre of round bar with the Use, care and maintenance of
help of 'V' block and marking block. (2 scribing block.
hrs.)
Surface plate and auxiliary marking
25.Joining straight line to an ARC. (08 equipment, 'V' block, angle plates,
hrs.) parallel block, description, types,
uses, accuracy, care and
maintenance. (03 hrs.)

26.Chipping, Chamfering, Chip slots & Physical properties of engineering
oils grooves (Straight). (08 hrs.) metal: colour, weight, structure,
27.Filing flat, square, and parallel to an and conductivity, magnetic,
accuracy of 0.5mm. (07 hrs.) fusibility, specific gravity.
Mechanical properties: ductility,
28.Chip curve along a line-mark out, malleability hardness, brittleness,
keyways at various angles & cut toughness, tenacity, and elasticity.
keyways. (1 hrs.) (04 hrs.)

29.Sharpening of Chisel. (2 hrs.)
30.File thin metal to an accuracy of 0.5
mm. (3 hrs.)

31.Saw along a straight line, curved line, Power Saw, band saw, Circular saw
on different sections of metal. (12 hrs.) machines used for metal cutting. (03
hrs.)
32.Straight saw on thick section, M.S.
angle and pipes. (8 hrs.)
33.File steps and finish with smooth file Micrometer- outside and inside -
to accuracy of ± 0.25 mm. (12 hrs.) principle, constructional features,
parts graduation, reading, use and
34.File and saw on M.S. Square and care. Micrometer depth gauge,
pipe. (10 hrs.)
parts, graduation, reading, use and
35.File radius along a marked line care. Digital micrometer. (03 hrs.)
(Convex & concave) & match. (12
hrs.)

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