1. About Dial Caliper. Nowadays, the dial caliper has become considerably more popular than the venire caliper. The reason is simple: compared to the venire caliper, a dial caliper is much easier to use and read. Additionally, compared to the digital calipers, a dial caliper is more durable. The dial caliper features the beam lock, dial, depth rod, dial calibration lock, main scale, two fixed jaws and two moveable jaws.
Total level of demand for desired goods and services (at any time by all groups within a national economy) that makes up the gross domestic product (GDP) . Aggregate demand is the sum of consumption expenditure, investment expenditure, government expenditure, and net exports.
Market Demand. Market demand provides the total quantity demanded by all consumers. In other words, it represents the aggregate of all individual demands. There are two basic types of market demand: primary and selective. Primary demand is the total demand for all of the brands that represent a given product or service, such as all phones or all high-end watches.