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Design, document, and provide 4 each working prototypes of a handheld rugged commercial grade tread depth gauge with the following:
Basic Unit (V1.0A)
A) General Specifications:
Measurement Range: 25.4mm/1"
Resolution: 0.1mm / 0.0005"
Accuracy: ± 0.2mm / 0.0078"
Operating Temperature: -10C to +70C
Auto-zero (whenever spring-loaded stainless steel pin is fully extended)
Ruggedized glass-filled nylon housing
Solid hardened spring-loaded stainless steel pin mechanism
Single handed use with button to trigger/capture reading
C) Power & Interface
USB 2.0: Mini USB connector for unit power and data transfer
Audible: Beeps when READ button is depressed
LED: Indicates when Power ON
E) Mechanical Buttons (membrane switch)
1) ON/OFF (Power)
2) READ (depress reads and transmits value to USB port)
Should quote as a separate line item a second version with these additional features:
OPTIONAL Advanced Unit (V1.0B) – Requires the following ad...
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