Weighing scale having a removable top wall

Weighing apparatus, comprising:

• (a) a horizontal base (9);
• (b) a plurality of generally rectangular vertical walls including a front wall (19), a rear wall (17), and a pair of side (23,25) walls cooperating with said base to define an open-topped weighing chamber (3) for receiving a movable weighing pan (5), said vertical walls each having an upper edge portion and a lower edge portion, the lower edge portion of said rear wall being rigidly secured to said base, and the lower edge portions of said front wall and said side walls being removably connected with said base;
• (c) means including a horizontal top wall (13) removably mounted on the upper edge portions of said front wall, said side walls, and said rear wall to close the top of said chamber;
• and
• (d) fastening means (43, 149, 243) for removably connecting said top wall with said rear wall and for simultaneously maintaining said top wall in engagement with said front wall and said side walls, and for maintaining said front wall and said side walls in engagement with said base;
• (e) at least one of said vertical side walls being connected with said base and with said top wall for horizontal movement between closed and open positions, respectively, relative to said rear wall and said front wall, thereby to afford lateral access to said chamber.