Metalwork - Exam Papers - HL - Project - 1993

150 Marks

Instructions

Details of Model Weighing Scales are shown on the accompanying drawing.

  1. Make the model using the material as specified in the parts list.
  2. Assemble the parts with the set screws and the nuts as supplied.  Solder the joints on the weighing pan.
  3. Design and form a graduated scale to be either affixed to the frame A or a part of it. This scale may not be extended beyond the dimensions of the frame. Do not alter these dimensions.

Parts List

Part No. Part Name Required Material and Description
1 FRAME 1 BRASS OR COPPER
2 PAN 1 BRASS OR COPPER
3 BASE 1 CLEAR PERSPEX
4 GUARD 1 COLOURED PERSPEX
5 BACK BRACKET 1 ALUMINIUM
6 PAN SUPPORT 1 BRASS OR COPPER
7 POINTER 1 BRASS OR COPPER
8 LINK 3 ALUMINIUM
9 ADJUSTING NUT 1 ALUMINIUM
10 ADJUSTING SCREW 1 STEEL

As Supplied

Part No. Part Name Required Material and Description
11 SPRING 1 STEEL
12 M4 x 35 SET SCREWS 4 STEEL
13 M4 NUTS 12 BRASS OR STEEL
14 M4 x  7 SET SCREWS 3 BRASS OR STEEL
15 M4 x 14 CSK SET SCREWS 3 BRASS OR STEEL
16 Ø4 WASHERS 10 BRASS OR STEEL

Design Element

Part No. Part Name Required Material and Description
17 GRADUATED SCALE 1 AS DESIGNED

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