Technology and our changing world high Technology

USING A MARKING GAUGE

1. 
   Check toe marking gauge to make sure toe spur, or pin, is a sharp wedge shape. If dull, this must be sharpened. Some types have a wheel at toe end of the beam.
   
2. 
   Adjust to toe correct length. Notice toe rule on toe side of toe beam. This can beused to set toe distance. Itwillnotbe accurate, however, after you have sharpened toe pin, or spur. To adjust again:
   

• Adjust to toe distance as shown on toe beam, and tighten toe thumbscrew lightly.
Hold lhegauge in your lefthand with the spur up.

• 
  Hold a rule on edge in your right hand. Place the end of the rule against the head of thegauge.
  
• 
  Check the distance. A slight movement of the head in either direction will adjust it to the correct amount. Tighten the thumbscrew.
  

3. 
   Try the gauge on a piece of scrap stock. Get the‘Teel” of the tool. It is better to push the toll than to pull it.
   
4. 
   Tilt the gauge at a slight angle. Hold the head gently, but firmly, against the surface or edge. Push the tool away from you. Make a shallow groove. If you push too hard, the point may jump out of place and scratch lhe surface.
   
5. 
   Never mark across the again. Do not use the gauge to mark for a bevel or chamfer (slanted cut).
   

MARKING WITH A COMBINATION SQUARE

1. 
   Adjust the blade to the correct length measured from the right-angle sideof thehead.
   
2. 
   Hold the head against the work and a pencil against the end of the blade.
   
3. 
   Slide both along the board to mark the line.
   

You can also use a rule and pencil for gauge-marking. This is a little more difficult because you must keep the rule square with lhe edge as you slide it along.


Review questio ns

1. 
   Name three common kinds of rules.
   
2. 
   What kind of rule is good for measuring curved surfaces?
   
3. 
   Name four kinds of squares found in the wood shop.
   
4. 
   Name three things that can bedone with a fry square.
   
5. 
   Which kind of squarehas ablade that can beremoved from thehandle or head?
   
6. 
   What is the purpose of outside calipers?
   
7. 
   Abouthow much material mustbe allowed for squaring up stock?