1. MEASURING TOOLS LESSON 5
STANDARD WIRE GAUGE :- The thickness of the sheet is measured with the help of the standard wire gauge and also measured the diameter of the wire.
STEEL RULE:- Like 15 cm,30 cm,60 cm,100cm.
STEEL TAPE:-Like 1 meter,2meter,3meter etc…
TRY SQUARE:- To check 90.
“L” SQUARE:- To draw parallel line and square on the metal sheet.

2. MARKING TOOLS
SCRIBER
DIVIDER
CALIPERS
MARKING BLOCK
TRAMMELS

3. SCRIBER
USED FOR MARKING OUT LINES ON METALS,AVAILABLE IN DIFFERENT SHAPES & SIZES .
MANY TYPES OF SCRIBER LIKE LIKE,STRAIGHT,BEND,KNIFE EDGE OFFSET ETC.
IT SHOULD NOT BE USED AS A SOLID & MARKING PUNCH.

4. SCRIBER
HEAD

5. DIVIDER
USED MARKING OUT CIRCLES & ARCS ON METAL SHEET.IT IS MADE OF SPRING STEEL.
IT SHOULD NOT BE USE AS A SCRIBER.
TYPES OF DIVIDER
SPRING DIVIDER
WING COMPASS

6. CALIPERS
CALIPERS ARE SIMPLE INDIRECT MEASURING INSTRUMENTS USED TO TRANSFER MEASUREMENT FROM STEEL RULE TO OBJECT & VICE VERSA
TYPES OF CALIPER
FIRM JOINT CALIPER
SPRING JOINT CALIPER
JENNY CALIPER

7. MARKING BLOCK
IT’S KNOWN AS THREE NAMES MARKING BLOCK,SURFACE GAUGE & SCRIBING BLOCK.
IT IS USED FOR SCRIBING LINES PARALLEL TO A DATUM SURFACE
TYPES OF MARKING BLOCK
FIXED TYPE
UNIVERSAL TYPE – THE SPINDLE CAN
SET TO ANY POSITION BY ROCKER ARM

8. TRAMMELS
TRAMMEL SET IS USE FOR STRIKING LINES AT 90. TO EACH OTHER AND ALSO FOR MARKING THE DISTANCE ACCURATELY.
IT IS USED TO DRAW LARGE CIRCLE & ARCS.
PARTS OF TRAMMELS
BODY
BAR OR BEAM
SCRIBER POINT
ADJUSTING SCREW

9. TRAMMELS