A-A-50059A
3.2.1. Platform. The platform shall be metal or other rigid material and shall have an integral non-skid surface or a mat or some other non-skid material secured to the top surface. The mat shall be rubber or similar water resistant material. The platform shall be at least 10 inches wide by 13 inches long.
3.2.2. Beams. The main beam shall be graduated from zero to at least 250 lbs with 50 lb
notched graduations. The fractional beam shall be smooth and have a 50 lb capacity with 0.25 lb graduations. The total weight measured shall be the sum of the two beams. The beam bars shall be graduated on both sides of the bar in such a manner that the markings for the measured weigh are visible. The center of the beam shall be at least 52 inches above the platform.
3.2.3. Base. The base shall be metal or other rigid material and shall not tip or rock on a flat surface.
3.2.4. Column. The column shall be metal or other rigid material and shall enclose the linkage mechanism connecting the beam to the platform.
3.2.5. Height measuring rod. The height measuring rod shall be telescoping and be designed to measure the height of a person standing on the platform. The measuring rod shall measure heights from 30 inches to 78 inches and shall have a tolerance of ±0.125 inch.
3.3. Type II. Type II scales shall have an analog weight display.
3.3.1. Weight display. The weight display shall consist of a reading face and an indicator. The indicator shall be parallel to the graduations on the reading face. The reading face shall be covered by a window of transparent material. The reading face may be fixed with a moveable indicator or the reading face may move with a fixed indicator. The reading face shall be graduated in 1 lb divisions. At a minimum, each 20 lb graduation shall be marked with its numerical value. Each 5 lb graduation shall be longer than its adjacent 1 lb graduations. The weight display shall be readable by a person on the scale.
3.3.2. Tolerance. The scale tolerance for zero to 200 lb shall be ±2 lb. The scale tolerance above 200 lb shall be ±1 percent.
3.3.3. Zero adjustment. There shall be a zero adjustment mechanism operable from outside the scale to allow display to be reset to zero.
3.3.4. Base. The base shall be metal or other rigid material and shall have an integral non-skid surface or a mat or some other non-skid material on the top surface secured to the top surface. The mat shall be rubber or similar water resistant material.
3.4. Type III. Type III scales shall consist of a base, a column holding the display unit, and a height rod. The scale shall be sensitive to within 4 ounces (0.25 lbs).
3.4.1. Base. The base shall be metal or other rigid material and shall have an integral non-skid surface or a mat or some other non-skid material secured to the top surface. The mat shall be
2
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business